Sounds like a mental patient who should not be on the streets... Or was a drug abuser.
This issue of the Blaylock report quoted a study that said that if ALL marijuana use was stopped, that 13% of the schizophrenia cases would occur.

The issue goes on to quote medical studies that show mj use before the age of age 17/27 causes permanent damage that leads to mental illness whether use is continued or not.
The crap the liberals use to justify legalizing pot will lead to lasting problems with future generations.