46th anniversary of 504 sit-in

46 years ago, Apr 5, 1977 was the start of the longest sit-in in US history. 

On April 28, 1977, Secretary Joseph Califano signed the regulations.

"Without 504 — there might well be no Americans with Disabilities Act, that finally brought us up to parity with federal civil rights laws covering gender and race."

https://dredf.org/504-sit-in-20th-anniversary/short-history-of-the-504-sit-in/