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From online hate speech to offline hate crime: the role of inflammatory language in forecasting violence against migrant and LGBT communities

Author

Listed:
  • Carlos Arcila Calderón

    (University of Salamanca)

  • Patricia Sánchez Holgado

    (University of Salamanca)

  • Jesús Gómez

    (Secretary of State for Security, Ministry of Interior)

  • Marcos Barbosa

    (University of Salamanca)

  • Haodong Qi

    (Malmö University)

  • Alberto Matilla

    (Secretary of State for Security, Ministry of Interior)

  • Pilar Amado

    (Secretary of State for Security, Ministry of Interior)

  • Alejandro Guzmán

    (Universidad Autónoma de Madrid)

  • Daniel López-Matías

    (Universidad Rey Juan Carlos)

  • Tomás Fernández-Villazala

    (Secretary of State for Security, Ministry of Interior)

Abstract

Social media messages often provide insights into offline behaviors. Although hate speech proliferates rapidly across social media platforms, it is rarely recognized as a cybercrime, even when it may be linked to offline hate crimes that typically involve physical violence. This paper aims to anticipate violent acts by analyzing online hate speech (hatred, toxicity, and sentiment) and comparing it to offline hate crime. The dataset for this preregistered study included social media posts from X (previously called Twitter) and Facebook and internal police records of hate crimes reported in Spain between 2016 and 2018. After conducting preliminary data analysis to check the moderate temporal correlation, we used time series analysis to develop computational models (VAR, GLMNet, and XGBTree) to predict four time periods of these rare events on a daily and weekly basis. Forty-eight models were run to forecast two types of offline hate crimes, those against migrants and those against the LGBT community. The best model for migrant crime achieved an R2 of 64%, while that for LGBT crime reached 53%. According to the best ML models, the weekly aggregations outperformed the daily aggregations, the national models outperformed those geolocated in Madrid, and those about migration were more effective than those about LGBT people. Moreover, toxic language outperformed hatred and sentiment analysis, Facebook posts were better predictors than tweets, and in most cases, speech temporally preceded crime. Although we do not make any claims about causation, we conclude that online inflammatory language could be a leading indicator for detecting potential hate crimes acts and that these models can have practical applications for preventing these crimes.

Suggested Citation

  • Carlos Arcila Calderón & Patricia Sánchez Holgado & Jesús Gómez & Marcos Barbosa & Haodong Qi & Alberto Matilla & Pilar Amado & Alejandro Guzmán & Daniel López-Matías & Tomás Fernández-Villazala, 2024. "From online hate speech to offline hate crime: the role of inflammatory language in forecasting violence against migrant and LGBT communities," Palgrave Communications, Palgrave Macmillan, vol. 11(1), pages 1-14, December.
    • Handle: RePEc:pal:palcom:v:11:y:2024:i:1:d:10.1057_s41599-024-03899-1
    DOI: 10.1057/s41599-024-03899-1
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    References listed on IDEAS

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