I apologize for the hostile responses you are receiving, it's just that while we agree with you on your stance against genital mutilation of children, the "men's rights activists" aren't really anything they claim to be.

Mainly their focus is to ensure their priveledge status in society as men. Here at /r/anarchism we see things a bit differently, mainly that the struggles that men do face are intertwined with the struggles that women and LGBT people face as well.

Many of the self described men's rights activists don't take this position, and believe that they are oppressed and no one else is. This is how many justify their criticisms of feminism and LGBT liberation.

However in doing so, the struggles that men face are direct results of patriarchy that force men into boxes of defined masculinity, removing their humanity. Arbitrary things are defined as masculine and feminine, and if a man wishes to do something deemed as feminine that is the wrong choice and they may face ostracization from their peers, family, etc. (Example: straight cisgendered man wants to learn how to ballet dance, or wants to cook, or learn to sew, etc. You do these things in certain cultures, you are now feminine and have failed as a man).

It should be no surprise that most of the insults aimed at us as men are to equate us with homosexuals or women, such insults like pussy, faggot, queer, sissy, cunt, little bitch, pansy, you do X like a girl, queen, what are you a girl/faggot/woman, men don't cry, etc. We are insulted because we oppose arbitrary patriarchal rules that set to divide us as humans.

Since our society devalues women and the LGBT members of our world, doing anything that even hints of something that typically these people do means that we are now inferior. The only way to liberate ourselves from this constrained box artificially created is to also seek the liberation of women and LGBT.

So long so as we allow their maltreatment and disrespect in our society so long so we will be imprisoned by these actions as well. Basically no one can call us faggot if we think LGBT people are normal and not some disgrace and no one can call us a little bitch if we respect the dignity and autonomy of women. By working with them to end their oppression on their terms, we can remove the power that these words and societal expectations hold over us as men.

That is why many users here are very critical to the MRA's, because they are only perpetuating the cycle of oppression in which they claim hate by ignoring the plights of other groups that they are intrinsically tied to. By ignoring these other plights, they are in effect giving power to those who chastise us for doing something outside of a rigid arbitrary box defined not by nature but by men.

I hope this is a better explanation, perhaps you won't agree with me on anything, but at least you can understand where we are coming from and why we don't want MRA stuff here.