( CNN ) -- Is the anger in American politics edging towards violence ? A man is shown legally carrying a rifle at a protest against President Obama in Phoenix , Arizona . About a dozen protesters carrying guns gathered this week , not far from a building where President Barack Obama was talking to the public about his plans to reform U.S. healthcare . One of them had a rifle slung over his shoulder , a handgun in a holster and bullets in his back pocket . Last week , a man protested outside another Obama healthcare meeting with a gun strapped to his thigh . It may be hard to believe but it was n't illegal . The meetings were held in parts of the U.S. that restrict concealed weapons but allow them to be carried freely if they 're in plain sight . A small number of activists make a point of exercising that right . The right has limits . The Secret Service can bar anyone with a gun from entering the buildings where the president was speaking . The protesters stayed far enough away to avoid trouble , though one man was arrested for trespassing and police found a gun in his car . In both places , the protesters said they opposed the president 's plans for healthcare but meant him no harm . `` An armed society is a polite society , '' said William Kostric . Should people be allowed to own guns ? Sound off below . Lately , the United States has been anything but polite . The healthcare reform plan has sparked the angriest opposition that the president has encountered since taking office . Most of the ire has been directed at lawmakers , who have also been meeting voters to discuss the plan . They 've been interrupted , insulted and threatened . Obama does n't attend those meetings but he 's hardly overlooked . A protester outside one meeting held up a sign saying `` Death to Obama '' and `` Death to Michelle and her two stupid kids . '' Is the president in danger ? When it comes to armed protesters standing outside a building while the president is inside , a Secret Service spokesman told CNN `` of course not . '' But Americans remember the assassinations of presidents from Abraham Lincoln to John Kennedy and the attack that wounded Ronald Reagan . Now , Barack Obama 's trips across the country to talk about health may be attracting people with guns . It 's an odd and unsettling thing .
Anti-Obama protesters demonstrate with weapons near where president speaking . In some parts of U.S. it is legal to carry weapons so long as they are in plain sight . Score: 6