Your invitation wasn't to me, but I hope it's ok if I take you up on it. Here is a very personal gripe: some of the women in group A express their frustration by shaming and accusing men beyond what seems justified. But this is often accompanied with the argument that men don't have standing to push back on any of these accusations or ridicule.
The worst example I know is this article that invalidates a vulnerable and personal story by reading it in the most uncharitable and mean-spirited way, such that no empathy with the man is possible.
http://www.rawstory.com/2014/12/mit-professor-explains-the-r...
Similar to the "code of blue" when it comes to police misconduct, no one seems willing to criticize fellow women when stuff like this comes out and say "that's uncalled for" or "that's not what feminism is about."
I won't tell my personal story here, but it has similarities to Scott's.