You proved my point - The law is not racist because it has nothing to do with the claimed superiority or inferiority of a race. Arizona isn't saying the Mexicans shouldn't be allowed in the country because they are inferior, they're saying they should only be allowed to stay if they are legal immigrants, and reserve the right to enforce that law. How is that racist? Once again - you're confusing discrimination with racism. It is clearly discriminatory, but it is not racist.
I still disagree with randomly pulling over Mexicans to check their status, but that part will be overturned the 1st time an American files suit for violation of their 4th amendment rights.
I know it seems you and I keep going round and round so hopefully this will be my last post on this particular topic.
Look at that last definition, "discriminatory based on race" Racial profiling is a procedure that by it's very definition is "discriminatory based on race" therefore it is a racist practice.