Charles Krauthammer : In a radio interview that aired Monday on Univision, President Obama chided Latinos who “sit out the election instead of saying, ‘We’re gonna punish our enemies and we’re gonna reward our friends who stand with us on issues that are important to us.’ ” Quite a uniter, urging Hispanics to go to the polls to exact political revenge on their enemies – presumably, for example, the near-60 percent of Americans who support the new Arizona immigration law.