Where? And for what reason?

It couldn’t have been the German government and its COVID-19 cluelessness, arbitrary measures that changed practically on a weekly basis or the thinly-veiled threats against those in Germany who refuse to get vaccinated, right?
German official slams online ‘incitement’ after mask killing – A 49-year-old German man was arrested Sunday over the the fatal shooting a day earlier in the western town of Idar-Oberstein. Authorities said the suspect told officers he rejected the measures against the coronavirus.”
“It was a cold-blooded murder,” Health Minister Jens Spahn told reporters in Berlin, noting that the suspect had initially gone home after being refused service for failing to wear a mask, only to return later and shoot the clerk in the head.
“The question is, what is the environment, what are the circumstances in which such a crime can occur?” he asked. “This has a lot to do with the incitement, the hatred, that is posted on social media.”