You sound like a white person who believes all BLM members are violent thugs based on video of someone burning down a store or saying violent chants lol.
The internet is not real life bro. Tumblr does not represent most feminists, anymore than The Coli represents black people. You're getting outraged over a corner of the internet and using that to justify stereotyping an entire sociopolitical movement.
I'm very aware of militant super hardcore online feminists. I'm also aware of regular feminists. I know plenty of feminists from work, former classmates, family members, etc and none of them are running around calling for the extermination of men. They're doing shyt like, oh I dunno...demanding equal pay for equal work, or changing gender norms, or calling out sexual assault/harassment, etc. I'm gonna assume that a lot of people here generally agree with the shyt that most feminists spend their time working on in real life...