I need advices to break up the brainwash of my surrounding SJW friends.

I was having a whatsapp conversation on speaker about girls being hysterical with a friend that lives 3000km away. We ended up talking about that bus driver that uppercuts a hysterical bitch. Another friend was staying at my place a few days and heard the conversation and started saying stuff like "a real man never hit a woman" blablabla. This very same guy has lost his 2 sons to ex wife, told me that she beat him, insulted him and even spat on him a few times. And yet, he will take women's defense automatically like a robot.

I think this is Stockholm syndrome at this stage ... but im friend with this guy since 1st year kindergarten so Im not giving up on him. Any advises on how to open his eyes / face the truth ?

PS = we were not saying that guys should hit girls, but that if a girl gets hysterical and start beating you for absolutely no reason other than you're a male and you are not supposed to hit her back, a guy (which is still a human being) must defend himself by using force.