Complex sentence: The anarchic group was also infamous for their iconic "The Party's Over" image of an upside-down martini glass, and was heavily involved in the Tompkins Square Park Riot in August 1988.
Split into simpler sentences: The anarchic group was also infamous for their iconic "The Party's Over" image of an upside-down martini glass. The band was heavily involved in the Tompkins Square Park Riot in August 1988.