If you are a leftist you should be against the criminalization of drug use or drug possession, especially for a drug as relatively harmless as cannabis. Like this really is a no-brainer, throwing someone in jail because they’re addicted to drugs doesn’t help them in any conceivable way. Drug abuse is a mental health problem and should be treated like one. Get them therapy and addiction support to help them get over it, and stop criminalizing drugs for people who can use it responsibly.