Martin Castro, chairman of the United States Commission on Civil Rights, while giving a talk recently in Lawrenceville, Ga., made a little joke. He said one in six Americans is a Latino — he paused and then added that the other five out of six Americans soon will be related to that one. He is correct. Your neighbors and co-workers today will likely become your in-laws tomorrow. Hence, I, and lots of others folks, would argue that any political group that angers the Latino community does so at its own peril.