> you will inevitably be forced to smile at and rub elbows with the same men you critique as war-criminals

I'm autistic, so I would smile and tell them exactly what I think of them. but fortunately I don't get invited to parties.

Why not? He's supposedly anti-imperislist yet had no problem living in their society.

Where would you have him live? In an apartheid nation that rejects him so thoroughly that he might get assassinated by some right-wing hardliners for speaking out against the oppression?

Seems that by your logic one who disagrees with an evil he sees in his society should leave immediately or commit to silence.