Tucson mass shooting has residents concerned over ongoing rampant violence, pols debating gun rights

A downtown Tucson, Arizona, mass shooting left nine victims wounded, the alleged shooter with life-threatening injuries, and locals concerned about the Democrat-run city's late-night gun violence having spun out of control.

The shooting erupted around 2 a.m. near Empire Pizza at East Congress Street and Sixth Avenue, a busy nightlife area filled with people leaving bars and restaurants. Police believe the violence began with a confrontation between two groups whose members knew each other, with bystanders caught in the crossfire.