He was known for outrageous protests-one of the most famous being the throwing of money in front of the New York Stock Exchange to speak out against the free market system. Hoffman was arrested for mutilating the United States flag( one of his many crimes), as the FBI had a 4,101 page file on him and his activities.
Hoffman was involved in organizing political protests surrounding the 1968 Democratic National Convention which culminated in violence between protesters and police. On March 20, 1969, he was indicted by a grand jury on charges of conspiracy and crossing state lines to incite a riot. He was found guilty of the latter charge on February 18, 1970, and sentenced to five years in prison. This sentence was later overturned. 
He went underground in 1973 to avoid being convicted in a drug bust. The coroner ruled Hoffman's death at the age of 63 in 1989 a suicide caused by a lethal combination of alcohol and prescription medications. Hoffman authored the countercultural book Steal This Book.
- ATTAC Terror Report, Youth International Party.