The number of Americans asserting their right to carry concealed guns has exploded – from less than a million a few decades ago to as many as 11 million now. There's evidence that gun prevalence can deter crime, but preventable tragedies perturb.
Why Americans now carry handguns in so many public places, from parks to college campuses. Is it making the country safer or more dangerous?
Photographers have been arrested, had camera equipment seized, and seen memory cards deleted by police officers. Is it harassment or protecting public safety?