Being a liberal gun owner (and in any case a lot of the people on that subreddit didn't seem like regular establishment dems to me but I've not gone on reddit for years) isn't the same thing as going ahead with shooting trump though.

Plenty of Americans have incoherent politics and access to firearms.

That was what I was saying, it's probably someone with unconventional politics or someone motivated by something other than just political views, like someone with a serious mental illness.