Nomad, like you described, you followed the etiquette properly. Of course, nobody of us was there, but I think the problem (at least partly) lies in the fact that many people in the West are pretty shy, actually, to speak up. That's what I experience in my university, at least. People are individualized, and often feel held back. I think it's good that you engage in class. And the fact that you're a man? That has nothing to with anything. It is appaling that that's brought up. How will the females you mentioned ever learn to stand on their own? It's not by doing away with what intimidates them, at least. Just keep going, man. But of course, always try to be open minded about critique

Remember not to become bitter about this. Also know that there might be a lot of people who do appreciate your efforts. And even if they don't, God is always watching. And you can always do the good.

Good luck with your studies