[Paul J. Browne, the chief police spokesman] said that two officers initially approached the man because he appeared to be smoking marijuana. When the officers tried to arrest the man, he stuck a marijuana cigarette in his pocket, raised the knife over his head and started to put on a blue bandanna.
DB, do you really have such a shallow understanding of the world?
Is it possible that this man was unstable enough that he would have eventually had a dangerous conflict with police and/or others? Sure. But in this case its clear that the conflict arose over marijuana.