RT info:eu-repo/semantics/article T1 Hate Speech on Social Media: Unpacking How Toxic Language Fuels Anti-Immigrant Hostility A1 Igartua, Juan-José A1 Ballesteros-Herencia, Carlos A. A1 Ballesteros Herencia, Carlos Antonio K1 online hate speech K1 toxic language K1 narrative transportation K1 identity fusion K1 indirect effects K1 social networks AB This study investigates the influence of toxic language in hate speech targeting immigrants, particularly through narrative formats like first-person X (Twitter) threads. Hate speech, defined as promotion of hatred based on personal or group characteristics, increasingly escalateson social media, impacting public attitudes and behaviors. While previous researchhas primarily focused on measuring the scope of hate speech through content analysis and computational methods, there has been limited attention to its effects on audiences.This study presents the results of an online experiment (N = 339) with a 2 × 2 between subjects design that manipulates the presence of toxic language and message popularity. Results indicate that hate messages lacking toxic language promote greater identity fusion with the author of the message, which in turn increases the intention to share the message,reinforces negative attitudes toward immigrants, and increases support for harsh policies against irregular immigration. Moreover, non-toxic hate messages significantly enhance narrative transportation exclusively for individuals with conservative political views, thereby further increasing their intention to share the message. These findings highlight that subtler forms of hate speech can create strong audience connections withhostile perspectives, emphasizing the need for anti-hate campaigns to address both overt and subtle hate content. PB MDPI YR 2026 FD 2026 LK https://uvadoc.uva.es/handle/10324/82531 UL https://uvadoc.uva.es/handle/10324/82531 LA eng NO Social Sciences, 2026, vol. 15, n. 2, 2-21 NO Producción Científica DS UVaDOC RD 26-feb-2026