Jennifer Lopez is getting some slack about wearing fur, which she does frequently. The singer has reportedly been getting letters from animal-rights activists threatening "to kill her in public, just like the slaughtered animals whose fur she wears." According to a source, Lopez initially ignored the letters, dismissing them as crazy junk mail, but husband Marc Anthony is taking the threats more seriously. "He has hired two off-duty police officers, in addition to her usual security team, to watch over ...