Republican presidential candidates have been making racist remarks about Latinos in the U.S., and they aren't falling on deaf ears. Those same candidates choosing to skip July's National Council of La Raza conference in Kansas City—which was attended by Democrats Hillary Clinton, Bernie Sanders, and Martin O'Malley—didn't go unnoticed. Acting as if Latinos don't matter in U.S. elections is not only bad politics, it is the height of political stupidity. Latinos listen.