Our tears are not enough. Our words and our prayers are not enough. If we really want to honor these twelve men and women, if we really want to be a country where we can go to work and go to school and walk our streets free from senseless violence, without so many lives being stolen by a bullet from a gun, then we're gonna have to change. We're gonna have to change.

Barack Obama, Memorial service for DC Navy Yard shooting victims, Sep 22, 2013