Don't blame "feminism" for that. False rape/harassment accusations occur and it's very wrong that they do, but they're not a product of feminism.

False rape/harassment accusations are the antithesis of feminism. First of all, that game is old as empire: women using social power and implicit credibility to get other men to use violence or bring social harm on men who displease them. It happened in the antebellum South, which is not exactly known for being a stronghold of feminism. It has probably existed in every society.

Women have a certain social power-- the ability to make men fight over them, to defend their honor, et cetera-- that is decidedly unfeminist in origin. Whether they choose to use it comes down to the individual. If anything, a feminist should be less likely to use that, instead preferring to solve her own problems instead of calling in a man to rough someone up.

Feminism and bad female behavior shouldn't be linked together. Bad behavior is as old as dirt on all sides of any class, gender, or race divide, and it's irrelevant to the real debate. At any rate, feminism is about equality, and abuse of archaic, gendered social powers goes directly against that purpose.