A man who drove his car into a crowd of people in Berlin – killing a teacher chaperoning a school trip and injuring dozens of others – suffers from psychological problems and has had run-ins with the law, a senior Berlin official said on Thursday. The 29-year-old of Armenian origin, who was naturalized in Germany in 2015, has been under police investigation on multiple occasions for crimes including bodily harm and trespassing. None of the alleged acts were politically motivated, Iris Spranger told lawmakers. “Posters were found in the car. Whether and to what extent these are connected to the…