And people in your country think they should ban guns, if someone had a gun there, he/she might have been able to stop the attack.
Texas has some of the most liberal gun laws in the entire nation. Texans celebrate this and usually do carry guns anywhere and everywhere. How do you know they didn't try to stop it? Perhaps the idea of arming everyone to the teeth isn't necessarily a good solution.
Cue the massacre defenders with their usual false flag allegations in 3... 2... 1...