Gun sales have surged after the Batman cinema massacre amid fears that politicians may use the shootings to seek new restrictions on owning weapons.
In Colorado, where Friday's shooting killed 12 and injured dozens, gun sales jumped in the three days that followed. The state approved background checks for 2,887 people who wanted to purchase a firearm - 25% more than the average Friday to Sunday period in 2012 and 43% more than the same interval the week prior.
Dick Rutan, owner of Gunners Den in Arvada, Colorado, said requests for concealed-weapon training certification "are off the hook." His four-hour course in gun safety, required for certification for a concealed-weapons permit in Colorado, has drawn double the interest since Friday.
"What they're saying is, they want to have a chance. They want to have the ability to protect themselves and their families if they are in a situation like what happened in the movie theatre," he said.
Day-to-day gun sales frequently fluctuate, but the numbers look strong outside of Colorado, too. Jay Wallace, who owns Adventure Outdoors in Georgia, found that his sales on Saturday were up 300% from the same day a year ago - making it one of the best days his business has ever had. He said customers are often afraid when there is a gun-related tragedy that some politicians might try and push through an anti-gun agenda.
"We shouldn't let one sick individual make us forget and lose sight of freedoms in this country," he said. The Second Amendment to the US Constitution guarantees the right to bear arms.
The Colorado killer, James Holmes, stockpiled weapons and explosives at work and home in recent months. He purchased thousands of rounds of ammunition and a shotgun, a semi-automatic rifle and two Glock pistols.
The rise in gun sales reflects but one of the anxieties created by the shootings. Since the massacre, there have been reports of chaos at cinemas, apparently sparked by misunderstandings or careless words. A confrontation with a drunken man in an Arizona cinema caused about 50 people to flee.
A California man was arrested after authorities say he made references to the Aurora massacre after the movie did not start on time. In New Jersey, a showing of "Batman" was cancelled after someone stood up during the movie, opened an emergency exit and then returned to their seat.
About 90 minutes into a Monday night showing of "Batman" in Santa Monica, California, shrieks from some girls sent about two dozen people sprinting for the exit. It turned out that a large man with a backpack was simply having a medical problem.