I’m not an expert by any means, but I’ve seen a number of articles over the years that claim the FBI takes domestic terrorism very seriously, and is always actively investigating them. There have been some arrests, too. Is it enough? I seriously doubt it. But it’s not being ignored.
Freedom of speech (and a general “preference” for white people and conservatives among law enforcement) makes it slower-moving than I personally would prefer. But I have to hang on to a sliver of hope that more of these assholes will soon be arrested.
And while their side thinks they have “all the guns” they really don’t. They just walk around with them in public like psychos and dipshits. Our side has guns, too.