I've had some decent discussions with feminists in the past, and their work on identity is really pretty interesting and valuable. But their numbers are totally screwed up - you know that "1/4th of all women have been raped" statistic? It's actually, "1/4th of women surveyed had sex that they wished they hadn't". I'll guess just as many men have had sex they wish they hadn't later.
I wonder why people cook up statistics to make their group's position look worse than it is. Do they think it helps in legislation or funding or education? The health people do it with STDs (greatly exaggerated risks), the drug people do it hardcore (I don't do any intoxicants, but alcohol is way more deadly and dangerous than half the illegal stuff in the USA), racial issues, ethnic issues, gender issues, sexuality, immigration, labor, etc, etc. It seems like tremendously many causes want to exaggerate their positions as worse off than they are, or the effects of choosing the other side as much worse than they are.
I think that'd be tremendously damaging to credibility in the long run, but I guess not many people check up on the science they read in the paper or see on the news.