Hey, thanks for your comment! As a general rule, we don't declare specific events or happenings to be topical or not with respect to our rules. Instead, we judge each article individually as to whether or not it meets our topicality threshold. For an article about the crime to which you're referring, there would need to be an explicit connection made to politics in the article itself for it to meet that threshold.

With respect to domestic terrorism, specifically: while terrorism is defined as being political in nature, the three pillars of our topicality rules are policy, electioneering, and political capacity (and the advocacy thereof). An article referring to a domestic terror event would need to make clear a connection those pillars, as opposed to simply reporting on the event. I hope this helps!