Happened to a friend of mine by an ex GF who said he was on psych meds (true though he is nonviolent with no history) and that he was threatening to kill his parents. NYPD SWAT no-knock kicked the door down to his apartment which terrorized his elderly parents as they pointed guns at their son (in his words, "machine guns".) BUT because he has psych issues and on meds he was forced into a cop car in front of the whole neighborhood to get a psych evaluation. He only received an apology from the cops who said they have no choice but to follow procedure.

edit should add sorry to hear that.