Anger is a useful emotion, I have learned. It shows us when something is wrong and gives us the energy to try to change things. Anyone who is not angry at the pervasive misogyny that pervades this culture is simply not paying attention.

Those who reduce this "hating men" are reacting defensively and, more problematically, in a reductionist paradigm. They are not looking at the actual issue, but by over simplifying and making it the victim's problem, they exonerate themselves.

A man who accuses a woman who is angry at the oppression she deals with constantly is not a friend or an ally, he is part of the problem and he needs to learn better.

This article puts it well, and nicely:
http://stealingcommas.blogspot.it/2013/06/how-not-to-be-privileged-ass-lazy.html

This one is more to the point and far less nice, but essentially says the same things:
http://decolonizeallthethings.wordpress.com/2014/03/03/how-to-be-an-ally-not-an-asshole/

I think both apply in this case.