Conventionally the enemies of feminism were members of the religious right. This was the case during second wave feminism, when religious minded people attacked things like birth control, abortion rights, and a woman's right to work outside of the home. But in the age of third wave feminism, many of the voices on the religious right (such as Pat Robertson) aren't really taken seriously anymore by anyone. So the new emerging voices against feminism - interestingly enough - are actually coming from atheists and intellectuals. The conventional wisdom of feminists was that as society became more modern and rational, it would become more feminist, so this is kind of a shock for them.