I got a signed photo of Lowenstein. It’s worth a lot of money. He was murdered by one of his own groupies.
A. Redistricting. The Fourth District lost SE areas of Queens (Springfield Gardens, Cambria Heights, Rosedale, etc.), which at the time were in considerable racial transition (from Jewish/Italian/German to black). After 1970, it became an all-Nassau district. All the Dem votes in the Five Towns couldn't hold up to the pubbie votes in Garden City, Franklin Square, Rockville Centre, etc.
B. The backlash against bussing and Lowenstein's antiwar stance.