Update, 6/12/2016, 4:15PM Pacific:
Here are two figures, with data updated to 6/12.
Figure 0a: 12 month moving average of mass shooting casualties; deaths inflicted by non-Muslims (dark red), wounded inflicted by non-Muslims (pink), deaths inflicted by Muslims (dark blue), wounded inflicted by Muslims (light blue). June observation for data through June 12. Source: Mother Jones, news reports for June 2016 and author’s calculations. Tabulations of religion of perpetrator by author.
Figure 0b: Cumulative sum of mass shooting casualties, beginning in 1982M08; deaths inflicted by non-Muslims (dark red), wounded inflicted by non-Muslims (pink), deaths inflicted by Muslims (dark blue), wounded inflicted by Muslims (light blue). June observation for data through June 12. Source: Mother Jones, news reports for June 2016 and author’s calculations. Tabulations of religion of perpetrator by author.