Gabrielle Giffords Town Hall: Gun Left Behind

Town hall disruptions around the country have led to some outbreaks of violence . Unions participating in town halls have received death threats . At an event held by Rep. Gabrielle Giffords (D-Ariz.) last week, the threat of violence led her aides to call the police after one attendee dropped a gun .

"Yelling and screaming is counterproductive," she told the Sierra Vista Herald at a Congress on Your Corner event last week. There, one visitor dropped a gun at the meet n' greet held in a Douglas Safeway, her staff says.

That has aides, who called police to the event, concerned for her safety.

"We have never felt the need before to notify law enforcement when we hold these events," said spokesman C.J. Karamargin.

One of the callers to the Service Employees International Union said, "I suggest you tell your people to calm down, act like American citizens, and stop trying to repress people's First Amendment rights... That, or you all are gonna come up against the Second Amendment."

Get HuffPost Politics On Facebook and Twitter!