0610002r-2 NAACP Collection, A Man Was Lynched Yesterday. (1936) Image: NAACP.

The flag is in homage to the 1936 flag that hung outside the New York City headquarters of the National Association for the Advancement of Colored People (NAACP).

On Thursday, marches took place across America in protest of the killings of both Philando Castile in Minnesota, and Alton Sterling in Louisiana. During the protest in New York which moved from Fifth Avenue, to Union Square and through Midtown, the crowd chanted: ''The people united, never be divided'' and ''Hands up, don’t shoot.''

a1_000 Dread Scott, A Man Was Lynched By Police Yesterday, 2015 Image: Dread Scott

The original ''A Man Was Lynched Yesterday'' flag was flown outside the window of the headquarters of the NAACP on 69 Fifth Avenue in New York in 1936, where it stood until 1938.