Two weeks ago, the horrible mass shooting in Las Vegas occurred, where 59 people were killed and 241 were injured. It was followed by prayers and minutes of silence, but nothing substantial changed in the US to regulate gun violence. Firearm ownership in that country is insane compared to the rest of the world.
There are many reasons why people become violent around the planet, but in the United States in particular, this violence becomes deadly when the perpetrator can so easily get a firearm.