Well, as an example, when I'm working in a mixed team of say 2 women and 5 men, and we're in a meeting discussing technical options, I may tend to give the women more eye contact than the men. This can go two ways for the women; it can be considered leering (I try very hard not to do that, but it is very difficult) and so that is an example of harassment. But in a way I am also giving away power to the women; power that they did nothing to earn other than be pretty.

One option is to stay heads down and surf ycombinator during a meeting. That way I'll not look at anyone inappropriately. That is not great for me though.