True, but logically speaking, it would be better if they used a rock, spear or sword than a gun because they would probably kill less people.
And if the point is to kill as many people as possible?
We will now be inundated with gun control crap.
Japan knife attack: At least 19 dead
https://www.cnn.com/2016/07/25/world/japan-knife-attack-deaths/index.html
Again, if a mentally ill nut wants to kill people they can do it. Heck, they don’t even need a weapon, they can just drive a car into a parade
Wisconsin: Five dead after car ploughs into Waukesha Christmas parade
https://www.bbc.com/news/world-us-canada-59369492