Police are tentatively calling it an act of terror
The suspect is still on the loose and police say they do not know the location of the shooter or shooters. There were reports of three shooters.
I'm not a political expert, but Angela Merkel has tied her career to immigration and open borders. It doesn't take a weatherman to tell you which way the wind is blowing on that theme. Every shooting/attack is a boost for nationalist and populist parties.