Complex sentence: Dennis Peron (died January 27,2018) was a gay American medical cannabis and LGBT activist and businessman who was the figurehead for the legality of cannabis throughout the 1990s influencing many in California and thus changing the political debate of marijuana in the United States.
Split into simpler sentences: Dennis Peron (died January 27,2018) was a gay American medical cannabis and LGBT activist and businessman who was the figurehead for the legality of cannabis throughout the 1990s. He influenced many in California and thus changing the political debate of marijuana in the United States.