10.7910/DVN/8OYWEVLyall, JasonJasonLyallDartmouth CollegeReplication Data for: Online communitarian appeals increase opposition to violent extremism (PNAS Nexus 2026)Harvard Dataverse2026Social SciencesLyall, JasonJasonLyallDartmouth CollegeNyhan, BrendanBrendanNyhanDartmouth CollegeVoytas, ElsaElsaVoytasIndependent ScholarLyall, JasonJasonLyallDartmouth College2026-04-172026-05-1128817256296130833490672533075088279527922857627066771708text/tab-separated-valuesapplication/pdfapplication/pdftype/x-r-syntaxtext/comma-separated-valuestext/tab-separated-valuestext/markdowntype/x-r-syntaxtext/tab-separated-valuestext/tab-separated-valuestext/tab-separated-values2.0CC0 1.0Replication materials for "Online communitarian appeals increase opposition to violent extremism" (PNAS Nexus 2026). Includes R code for the Facebook analyses and for the online survey as well as the required datasets for all analyses. An English-language version of our survey instrument is also included as well as our full Supplemental Information (SI) document.