On May 9, Nat Weinstein died in San Francisco at the age of 89. In 1945, at the age of 20, he had joined the Socialist Workers Party, where he rose to leadership positions in New York, Seattle, and San Francisco. He spent 69 years as a political activist, eventually leaving the Socialist Workers Party to co-found Socialist Action. See this obituary by Jeff Mackler. Thanks to IndependentPoliticalReport for the link.