123Movies. In Spring, 1977, disabled individuals across the nation demonstrated to demand the implementation of Section 504 of the Rehabilitation Act of 1973. The nationwide rallys evolved into sit-in demonstrations with over 100 protestors occupying the Federal Building in San Francisco for 26 days in conjuction with sit-ins in other major metropolitan areas, particularly in Washington D.C. Disabled demonstrators demanded that regulations implementing civil rights for disabled Americans which had been delayed for over 4 years, be implimented immediately.