I can say I've gone through this process.
I never had violent thoughts in my head into early adulthood. When people would say men are violent or whatever, I knew they were referring to other guys. Like how IT and assholes like that always say "We're not saying this bad thing about you!", that was my mindset.
But, eventually, I had to realize I was the type of man that people were assuming these horrible things about. And if they're going to assume that based on me doing absolutely nothing, then why shouldn't I adopt those behaviors? Not that I'm a criminal today, far from it. I just don't care anymore. Example, if someone is getting murdered or raped by me, I'm not even going to react.
I used to have a visceral reaction to seeing any violence. Now I can watch people get beheaded and tortured in the worst ways and just laugh while eating dinner. I've been desensitized into being a monster because I AM a monster to most people solely due to my genetics.