I mostly got off 4chan in 2010 when I left for college and got a life. It always had disgusting racist/violent tendencies but I was a pretty immature edgelord.
When Trump started picking up steam I started checking back in on it to find it had become a right wing hell hole.
I genuinely believe the average person should be much more aware of how effective and dangerous an indoctrination tool it is these days.
People keep capitalizing on these shooters being vaguely left or right but the only trend I’m noticing is that they’re downstream or 4chan.