I understand, Dave, and I'm not upset with you. You have always been pretty restrained even when you disagree with folks here. I do hear what you're saying about demonization and I know I can be guilty of it. But sometimes stereotypes exist for a *reason*. The gun obsession is primarily on the right, and when ideology is involved (when we know of it, we don't always), it's almost always someone screaming about blacks or Jews or some damn right-wing bogeyman. There are a few exceptions - I remember one exception of a liberal engaging in a mass shooting:
https://www.cnn.com/2017/06/14/homepage2/james-hodgkinson-profile/index.html
If you know of others let me know. The 'non-binary' guy who shot up the gay nightclub was less 'non-binary' than advertised (it was fairly recent) and he also came from a right-wing family, fucked up for reasons arguably other than ideology (substance abuse, emotional abuse, Dad was a porn actor). Some, like the Las Vegas shooter, we STILL don't know what his motive was. Some simply share some elements of 'traditional' thinking without necessarily being terribly political (like the incels going after women who won't have sex with them because they feel so entitled, plus there's the love affair with violence, killing, guns, weapons, etc.)
It's interesting that liberals are way under-represented in mass shooters, along with women. The exceptions exist, but they're pretty small. (One liberal I can name so far, and four women).