that poor guy's body language says it all really. He didn't want to be there at all. Someone should have rescued him.
I was on a bus in Brixton once when a black American loudly started lecturing the black (and, when no black was available, Asian) passengers about how oppressed they were. They really didn't want to be there at all. We were eventually rescued by an old Caribbean lady who confronted him head on. "I'm not oppressed," she said. "Speak for yourself."
"But I'm a policeman," the American bleated.
"Arrest me, then," she said.
(I was sitting next to the American and he didn't so much as look at me.)