"To assume that these Anglo-phobes and America-haters represent even a significant minority of Hispanic immigrants "
All we have to do is look at the demonstrations and count the number of mexican flags versus the number of US flags.
When I look around denver I see very few American flag stickers on the backs of Hispanic cars, but I see tons of Mexican flags.
It isn't a broad brush at all.
Not a broad brush, but a gross generalization.