Will the U.S. Ever Change its Gun Laws?

Barack Obama, the U.S. president, has had to make speeches like this three times already during his tenure, consoling communities where mass killings had taken place.

The said mass murders took place in Tucson in Arizona, Fort Hood in Texas and Aurora in Colorado.

But it was only after last week's killing of 20 children aged six and seven in Connecticut that Obama said it was time for action.