Does it dull the pain/regret of doing harm to another?
You see more violent episodes with the younger crowd because it’s never just Marijuana. It’s Booze, opiates, cocains, synthetics, contrary reaction to Benzodiazapams and other abused drugs.
The violence is during the actual transaction, involves the dealer and/or money and involves somebody feeling like they are getting ripped off (stoned or not), and not much of a result from actually getting stoned.
There’s so many other factors involved and it’s easy to blame Marijuana, there are advocates the freely admit that the illegal-ness of the Marijuana transaction and the black market prices are what really cause the violence (dealer and cartel) and think decriminalizing Marijuana use and possession would save us a bunch of money and help us get rid of people that shouldn’t be in the gene pool anyway.