Missed this. Died last Saturday July 24. I also saw another headline. where it lauded him "Jackie Mason's thorny career: Once a beacon for Jewish pride, the comedian later turned to bigotry" because he supported Trump.
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He kept the borscht belt style of comedy alive long after the Catskills resorts had closed and eventually brought it, triumphantly, to Broadway.

Jackie Mason, whose staccato, arm-waving delivery and thick Yiddish accent kept the borscht belt style of comedy alive long after the Catskills resorts had shut their doors, and whose career reached new heights in the 1980s with a series of one-man shows on Broadway, died on Saturday in Manhattan. He was 93.

His death, at Mount Sinai Hospital, was confirmed by the lawyer Raoul Felder, a longtime friend.

Mr. Mason regarded the world around him as a nonstop assault on common sense and an affront to his sense of dignity. Gesturing frantically, his forefinger jabbing the air, he would invite the audience to share his sense of disbelief and inhabit his very thin skin, if only for an hour.

"I used to be so self-conscious," he once said, "that when I attended a football game, every time the players went into a huddle, I thought they were talking about me." Recalling his early struggles as a comic, he said, "I had to sell furniture to make a living — my own."

The idea of music in elevators sent him into a tirade: "I live on the first floor; how much music can I hear by the time I get there? The guy on the 28th floor, let him pay for it."

Jackie Mason, 93, Dies; Turned Kvetching Into Comedy Gold - The New York Times