Actually we should probably open a thread on this - why do youngsters not understand feminism, why does no one like it.
I can remember back when I were a youth and went to uni and encountered self-described feminists for pretty much the first time. I'm sorry to report that I took the position that I was an equalist, an egalitarian, and a lot of these feminists were man-haters who needed to sort their own heads out. Admittedly one of them standing in the bar shouting 'all your penises are oppressing me' didn't help. Yet I had plenty of experience of sexual harassment already, which I got annoyed about and didn't see why I should have to put up with it, and considered my dad unlikeable for many reasons but including his sexism.
I did have ishoos as a youngster (ha, well, most of them gone) thanks to my parenting and was confused on a number of fronts, but I think the more theoretical dimensions of feminism are difficult to grasp in a predominantly patriarchal society.
I genuinely didn't realise how much women have been written out of history, for example, and why we should therefore study women's history particularly to redress the balance.
But than anything, I think it is simply not understanding that feminism is equalism, not pro-women-anti-men.