The Mrs Banks quote is perfect - feminists tend to look at the bigger picture, and this sums it up.
Personally, I dislike men who are arseholes.
I don't have any arsehole men in my life. However, I do read about A LOT of them - on here, in the news, committing acts of terrorism, accepting the Republican Party nomination, being appointed Foreign Secretary, etc, etc. So although my personal experience of men is mostly overwhelmingly positive, there are undeniably, a significant number of arseholes wandering about.
So, when someone says that feminists hate men, my reaction is to think that person thinks all men are arseholes, and therefore has a low opinion of men. Not feminists...