If someone came along to my quizzes and accused all "black" people of being stupid, or all Jews, or all Pollacks, or all Chinese people... I would respond to them with equal vigor.
For the record if there are any sane people in the audience, I do not experience pride associated with any country. Yes, of course there is corruption in both the United States and in the UK; same as every other country in the world (arguably better than most, though there are intelligent counter points to that argument). This has nothing to do with calling out bigots for what they are.