According to the report, the dude had already attacked a mental health worker with the knife.
That’s interesting, because it’s not what the health worker said.
“He just tried to attack me and the father,” a clinician, whose face is blurred, says in the video as Min Yang, whose face is also blurred, walks into the conversation. “He became very aggressive. He tried to kick me. I walk away. He had some physical altercation.”
Also of note is that his father disputes that even that happened:
Min Yang added that he was standing between his son and a clinician and never witnessed any kicking or physical violence, only shouting.