Marijuana does not make people violent. It doesn’t act on the central nervous system like that. Alcohol does.
Delta 9 tetrahydrocannabinal , the psychoactive chemical in marijuana isn’t present in alcohol.
Think of it this way, an equation if you will.
In our sober, waking world we’re governed by intellect over emotion.
When we’re drunk that equation is flipped.
It becomes emotion over intellect.
Actually it is particularly famous for paradoxical and unpracticable effects.