Driven by fears that President Obama will restrict gun ownership, gun sales have surged in the six months since his election, the Guardian reports. The FBI says that, since November, more than seven million people have applied for criminal background checks in order to buy weapons, and that doesn't include many more who buy at thousands of gun shows without facing checks. Reportedly, assault rifles have been particularly popular. Gun control advocates have accused the NRA of whipping up a frenzy by portraying Obama as a gun owner's worst nightmare. In the last month, 50 people have been killed in a string of shootings.