Under the law in 48 states, here’s what can happen when an adult is thought to possess marijuana: Men with guns can go to his home, kick down his door, force him to lay face down on the floor, restrain him with handcuffs, drive him to a police station, and lock him in a cage. If he is then convicted of possessing marijuana, a judge can order that he be locked in a different cage, perhaps for years.
There are times when locking human beings in cages is morally defensible. If, for example, a person commits murder, rape, or assault, transgressing against the rights of others, then forcibly removing him from society is the most just course of action. In contrast, it is immoral to lock people in cages for possessing or ingesting a plant that is smoked by millions every year with no significant harm done, especially when the vast majority of any harm actually done is borne by the smoker.