Illegal immigration, grand theft auto, and racial profiling

Here is a comment from one of the comment box, which is something one typically hears in the 1070 debate.

Racial profiling is a red herring; if 99% of the illegal aliens in a state are hispanic, then hispanics are going to be targeted in any enforcement of immigration law.

I don't see that this follows. Suppose 70% of car stolen in the Phoenix area are stolen by Hispanics. It doesn't follow that the police, in tracking down car theives, need to consider ethnic status in their procedures for finding car theives. 70% percent of the car theives they catch them will be Hispanic. That doesn't mean that profiling or anything like profiling was involved.