I strongly believe social media is the cause of this. I suspect that nation state actors purposely spam videos (even older ones) that drum up fear and division

I strongly believe social media is the cause of this. I suspect that nation state actors purposely spam videos (even older ones) that drum up fear and division (eg black guy beating up old white woman or white cops beating up black kid). People can now see so many horrible things that have always been happening but are and have always been rare that they think these things are happening all the time.