My point is that pot dealers can be rough; such behavior isn't reserved for pimps, meth dealers and cocaine distributors.
I agree. But I don't understand why people refer to them as "non-violent drug offenders".
You hear this when they say these "non-violent drug offenders" should be released from prison to make room for the "real" criminals. Since most drug offenders in prison are there for dealing or trafficking drugs, I (like you) wouldn't characterize them as "non-violent".