It was workplace violence caused by the lax gun laws that allow anyone to buy a gun. That’s what will be said. Bet on it.
Oh come now, it’s not that simple. You completely forgot to mention the crucial role that anthropogenic global climate change plays in motivating these sorts of episodes. When are people ever going to learn to start recycling so the world can be spared all this senseless violence?
Bernie Sanders will tell you global warming caused it. At one point in time long ago, people had enough common sense to understand if one made bad decisions, bad consequences were the result. Twice in succession, the voters of the United States went to the polls to choose someone to lead them. Both times a majority of voters said, via their votes, that they wanted a muslim to have the rule over them. Their wish was honored. Every Nation in recorded history that has muslims, invited or uninvited, has lived to regret it. Some had a short time to rue their presence, others had longer.