This is a good effortpost post on wrecker behavior, specifically with this comment thread about how people posting over-the-top rhetoric is a known technique to doxx people:
https://hexbear.net/post/207585/comment/2620058
For example, one reason someone might be asking for links to 3D printable gun resources is not because they want to be able to use them, but because they want to know who on this site is using which services in particular, so future efforts can be focused to relevant communities with overlap in users. It’s social mapping.
I also wanted to share this piece by Lenin on adventurism:
https://www.marxists.org/archive/lenin/works/1902/sep/01.htm
TLDR is that when someone is advocating for adventurist violence, not engage. Report and move on. At most, call them a fed. If anyone is confused by this, ask for an explanation in the megathread after the ban hammer falls and people will be happy to link you some reading or give you a basic explanation
I think islamic groups would claim them if they started them. Recruiting, promoting others in the country to do such attacks and to make the state spend enormous sums of money on trying to prevent future such attacks.