Reminds me of this from 2013.
<a href="https://en.wikipedia.org/wiki/Metcalf_sniper_attack" rel="nofollow">https://en.wikipedia.org/wiki/Metcalf_sniper_attack</a>
Maybe the work of some of these fine folks: <a href="https://en.wikipedia.org/wiki/Terrorgram" rel="nofollow">https://en.wikipedia.org/wiki/Terrorgram</a><p>One pertinent reference: <a href="https://extremism.gwu.edu/sites/g/files/zaxdzs2191/f/CriticalInfrastructureTargeting09072022.pdf" rel="nofollow">https://extremism.gwu.edu/sites/g/files/zaxdzs2191/f/Critica...</a>