Banning any jokes about anything is a bad idea. Trying to get comedy club owners to ban comedians who (they believe) tell or have told or may tell 'rape jokes' is not just a bad idea, it is actively dangerous. Where does the censorship end?
In addition to a need for education around mental health there also needs to be a level of care administrated by the police. Arresting and restraining people comes with responsibility, and death should not be an outcome.