Source-linked AI summary
The Geospatial Characteristics of a Social Movement Communication Network
Michael D. Conover, Clayton Davis, Emilio Ferrara, Karissa McKelvey, Filippo Menczer, Alessandro Flammini
TL;DR
The paper asks how a protest movement’s communication geography reflects its organizational needs and differs from stable political communication. It reconstructs Occupy Wall Street’s Twitter network using geolocated, sampled tweets and compares geographic attention, state-to-state flows, and interstate versus intrastate content. Occupy communication is more local and hub-centered, with cross-state messages emphasizing framing and media while same-state messages emphasize protest action, places, and times.
Problem
The paper examines how social-movement needs are reflected in communication-network geography and how Occupy Wall Street differs from stable domestic political communication.
Method
The authors reconstruct a state-level weighted Twitter communication network from Occupy and stable-political streams, then compare attention allocation, geographic flows, and interstate versus intrastate tweet content.
Results
Occupy communication is more geographically concentrated and localized, with California, New York, and Washington D.C. generating 53.8% of total retweets; interstate messages emphasize framing and media, while intrastate messages emphasize protest action, places, and times.
Takeaways & Limitations
The findings support a division in which local communication is associated with resource mobilization and long-distance communication with collective framing.
Takeaways & Limitations
Location inference relies on raw-text location descriptors that can be geographically meaningless, requiring blacklist filtering and other preprocessing.
Abstract
from arXiv · showhide
Social movements rely in large measure on networked communication technologies to organize and disseminate information relating to the movements' objectives. In this work we seek to understand how the goals and needs of a protest movement are reflected in the geographic patterns of its communication network, and how these patterns differ from those of stable political communication. To this end, we examine an online communication network reconstructed from over 600,000 tweets from a thirty-six week period covering the birth and maturation of the American anticapitalist movement, Occupy Wall Street. We find that, compared to a network of stable domestic political communication, the Occupy Wall Street network exhibits higher levels of locality and a hub and spoke structure, in which the majority of non-local attention is allocated to high-profile locations such as New York, California, and Washington D.C. Moreover, we observe that information flows across state boundaries are more likely to contain framing language and references to the media, while communication among individuals in the same state is more likely to reference protest action and specific places and and times. Tying these results to social movement theory, we propose that these features reflect the movement's efforts to mobilize resources at the local level and to develop narrative frames that reinforce collective purpose at the national level.
Introduction
The study examines how Occupy Wall Street’s communication geography reflects social-movement needs and differs from stable domestic political discourse. It finds concentrated attention around major locations and distinct local versus long-distance communication functions.
- Introduction: Occupy Wall Street is studied as a prominent movement in which social media played a central role in development, organization, communication, and coordination.The analysis focuses on Twitter users and compares Occupy communication with the #tcot and #p2 streams representing stable political discourse.
- Introduction: The paper frames resource mobilization and collective framing as core social-movement challenges that involve sustaining activities and establishing narratives about a movement’s purpose.Effective framing can foster community and engagement while responding to pressures from establishment organizations.
- Introduction: Occupy’s communication needs are shaped by sustained physical occupations requiring housing, sanitation, communication infrastructure, and direct-democratic coordination.Major encampments and assemblies in cities including New York City, Oakland, Washington, D.C., and Boston are described as important organizational settings.
- Introduction: Occupy Wall Street communication is more geographically concentrated than stable domestic political communication, with New York, California, and Washington D.C. producing more than half of retweeted content.The authors link this concentration to the movement’s reliance on prominent encampments, protest activity, and local human-resource mobilization.
- Introduction: Local Occupy communication emphasizes physical places, protest action, and specific times, whereas interstate communication emphasizes framing language and news media.The authors associate these patterns with resource mobilization locally and collective framing across state boundaries.
Materials and Methods
The authors reconstruct state-level Twitter communication networks from sampled tweets, infer user locations from self-reported strings, and compare attention, information flows, and tweet content across geographic relationships. They use retweet distributions, weighted directed networks, and token-probability ratios to characterize these patterns.
- Materials and Methods: The study analyzes Twitter data collected from July 3, 2011, through March 12, 2012, using Occupy hashtags and the #tcot and #p2 streams as a comparison baseline.The gardenhose supplied an approximately 10% sample of the full Twitter stream, and the sampling procedure produced 1,522,415 Occupy-associated tweets.
- Materials and Methods: User locations are inferred from self-reported location strings through blacklist filtering, fuzzy matching, and Bing geocoding, with analysis conducted at the state level.The procedure geocoded 55.7% of Occupy users who reported location strings, while 29.3% of domestic-political-stream users received geolocation estimates.
- Materials and Methods: The analysis defines activity distributions from state-level retweet totals, treating retweets as measures of attention allocation rather than total content production.For each state, activity is based on its originating retweets divided by total originating retweets.
- Materials and Methods: A weighted directed user network records retweets, then aggregates user-to-user edges into weighted state-to-state communication flows.An edge from one state to another sums retweet weights for all user-level edges connecting those states; the induced network includes 143,437 Occupy tweets and 78,467 comparison-stream tweets with state metadata for both users.
- Materials and Methods: Interstate and intrastate tweets are compared using token-probability ratios to identify content disproportionately associated with cross-state or same-state communication.Interstate tweets connect users in different states, while intrastate tweets connect users in the same state.
Results
Occupy Wall Street communication was geographically concentrated and highly local, with dominant hubs and limited cross-state connectivity compared with stable domestic political communication. These structural patterns were examined alongside differences in intrastate and interstate communication content.
- California, New York, and Washington D.C. generated 53.8% of Occupy retweets, whereas Washington D.C. generated 10.7% of stable domestic political communication.New York alone accounted for 30% of Occupy retweet activity.
- Figure 1 shows a few high-profile locations dominating Occupy retweet traffic, in contrast to the more heterogeneous state activity profile of domestic political communication.The figure orders states by their share of retweet traffic for each content stream.
- The Occupy communication backbone formed a concentrated hub-and-spoke structure centered on New York, California, and Washington D.C., unlike the denser interstate interactions of domestic political communication.Multiscale backbone extraction identified statistically significant traffic patterns across weight scales.
- 40% of Occupy retweets originated and terminated within the same state, compared with 11% in domestic political communication.The paper describes this as an increase of more than 350% in locality.
- The study compares intrastate and interstate tweet content using tokens occurring in at least 0.1% of both communication types.Table 1 reports the ten most overrepresented tokens for each type of communication.
Discussion
Compared with stable domestic political communication, Occupy Wall Street exhibits localized, hub-and-spoke communication shaped by resource mobilization and distinct interstate framing practices.
- The Occupy network has a highly localized structure, with disproportionate same-state traffic and minimal state-to-state connectivity compared with stable domestic political communication.Its backbone concentrates statistically significant traffic around New York, California, and Washington D.C., unlike the more extensive cross-state interactions in the comparison network.
- Local communication is interpreted as supporting resource mobilization because Occupy required tangible resources and participants for protest action and extended encampments.This helps explain why a disproportionately large fraction of attention is allocated to communication at the local level.
- New York, California, and Washington D.C. function as hubs because they host major encampment and decision-making activity, concentrating widely rebroadcast content.The resulting stream resembles a broadcast with a few net content-producing locations rather than a nationally distributed conversation.
- Interstate communication favors framing language and media references, whereas intrastate communication more often contains rallying language, protest action, and specific times and places.The paper links these contrasting content patterns to collective framing across state boundaries and resource mobilization within states.
- Table 1 compares tokens overrepresented in intrastate and interstate communication using the ratio P(Token|Intrastate)/P(Token|Interstate).Small ratios indicate greater intrastate prevalence, while large ratios indicate greater interstate prevalence.