Ban beer and legalize weed.

Stoners are already agrressive before they become stoners, and then, consequently, they become more and more aggressive the more they use their drugs. This is logical, and I also know this from my experiences with stoners when I worked as a teacher at a school where many pupils were stoners. I can guarantee you that some of them would not had become stoners, if they had not come in contact with stoners at the school. If you are agressive and commit crimes, then you tend to take drugs too - and vice versa -, and the likelihood of becoming a stoner is very high.

Most people who drink only beer are not aggressive.