Taken in isolation the two tweets in particular don't seem that much crazier than anything else he has said over the past four years. However, given the overall

Taken in isolation the two tweets in particular don't seem that much crazier than anything else he has said over the past four years. However, given the overall context of what happened on Wednesday and the (now deleted) tweets leading up to the incident, there is sufficient justification (IMO) for a ban from those prior tweets alone.