A rash of reports of sexual assaults at Occupy Wall Street protests across the country has both police and activists raising red flags. Nearly a half-dozen assaults have been reported at Occupy camps, including three at the New York City protests, which have prompted protesters to set up a “women only” tent in Manhattan's Zuccotti Park to provide a safe haven. “The concern would be the rapes and attacks that aren’t reported,” said Sgt. Ed Mullins, president of the Sergeants Benevolent Association, a police union in New York City. “We have no way of really knowing. If you have three...