Trying to pick on a little ones first is a bully tactic.

Those addicted to cannabis will easily choose cannabis over fire arms. They are already mellow, easy going people, so just shake a big enough stick at them and most will comply.

(addiction in this context is not to the plant, it is usually to the escape)

Further, getting guns out of the hands of the population is priority number one with those who run/own the govern-cement. And they will never stop pushing. Control is what they want, ultimate control.