I guess his lawlessness and conscience became to much so he committed suicide.
1989 -- "Abbie Hoffman, the clown prince of radical protest whose life and death seemed a synonym for the 1960's, committed suicide with a huge dose of barbiturates, a Pennsylvania coroner ruled yesterday. ...he was a chronic manic depressive. Tom Hayden said that his onetime comrade in arms found life in the 80's irrelevant. ''He was really uncomfortable with becoming middle aged and facing old age without seeing significant social change...I have to think that perturbed him a lot. He was always trying to re-create the 60's and was deeply dismayed he was becoming a prophet in the wilderness of the 80's.''He offed himself too soon. I'm sure he'd be ecstatic at the "significant social change" of recent years.