:::::::Yes, we do know men are raped.  But this is an article about the men's rights movement, and for this article we need to summarize reliably sourced information about the men's rights movement. Do reliable sources state that the men's rights movement are interested in this topic?  I didn't find any last February, but I am entirely open to the possibility of including some info about this if someone is more successful than I was.  But the fact is there can only be a POV problem if there are reliable sources that are not being reflected in the article;  per WP:NPOV "Neutrality requires that each article or other page in the mainspace fairly represents all significant viewpoints that have been published by reliable sources, in proportion to the prominence of each viewpoint". If there aren't any reliable sources, then per WP:V and WP:NPOV there isn't anything to discuss.