By the time Sen. John McCain finished his speech and delegates let out of the Xcel Energy Center, downtown was so devoid of activists that a large diverse crowd gathered in Rice Park couldn't even muster a unified cheer, despite many signs indicating anti- Republican sentiments. In short, a stranger might not know this is a democratic town. The end came after protestors who had rallied at the Capitol grounds made several unsuccessful attempts Thursday night to reach the X, site of the Republican National Convention. Large rows of armed law enforcement officials, many on bicycle or horseback, stopped them...