**Contents:** - **Supplementary Information A - Annotated Analyses:** <br> This Analysis component contains the the full outputs of all analyses. We offer short annotations to comment on the order and aims of the analyses. A more interactive version of the outputs, including all the code and annotated results, is available at: https://www.gunpsychology.org/resources/HateCrime/analyses.html - **Supplementary Information B - Survey Study 1:** <br> This supplementary file includes the full survey print-outs for Study 1. This study uses two repeated measures survey data sets from 2018. Participants were recruited after the Pittsburgh synagogue shooting (see subsection *‘MTurk – Pittsburgh – Oct. 2018’*) and re-contacted after the Thousand Oaks bar shooting (see subsection *‘MTurk - Thousand Oaks – Nov. 2018’*). - **Supplementary Information C - Surveys Study 2:** <br> This supplementary file includes the full survey print-outs for Study 2. This study uses two independent survey datasets from 2019. Participants were recruited after the Christchurch mosque shooting (see subsection *‘Qualtrics Panels – Christchurch (NZ) – Mar. 2019’*) and after the Utrecht tram shooting (see subsection *‘Flycatcher – Utrecht (NL) – Mar. 2019’*). - **Supplementary Information D - Surveys Study 3:** <br> The following supplementary appendix includes the full survey print-out for Study 3. This study uses a survey data set from 2019. Participants were recruited after the El Paso Walmart shooting and the Dayton bar shooting had taken place (see below *‘Qualtrics – El Paso/Dayton – Aug. 2019’*).