That's the intro part of an LA Times article I recommend, A journey into fear and racism. Part of the recommended article:
For a lot of Latino people, SB 1070 is a slap in the face, a cheapening of their citizenship. Teresa Muñoz felt such a strong sense of injustice that she brought her 7-year-old, U.S.-born son Edgar to the Phoenix rally. She had him carry a U.S. flag, while she held a sign over his head featuring an arrow and the question "Illegal?"
Believe it or not, a lot of people think they know what an illegal immigrant looks like. They write to me all the time. They see "illegals" everywhere, on their front lawns and in their hospital clinics. A few seem to think every Latino voice in my column belongs to an "illegal," even such unlikely suspects as kids in South-Central mastering Shakespeare.
If they could cross the cultural divide that separates them from their neighbors, they'd see how short-sighted they are. But now their paranoid vision of life has been codified into law in Arizona — and that's scaring their opponents into action.