north side of the square, for the capitol of the government-in-exile they declared. On September 5, 1882, in the first Labor Day celebration, a crowd of at least 10,000 workers paraded up Broadway and filed past the reviewing stand at Union Square. On March 28, 1908, an anarchist set off a bomb in Union Square which only killed himself and another man. On August 21, 1893, Emma Goldman took the stage at Union Square to make her "Free Bread" speech to a crowd of overworked garment workers. She also addressed a crowd on May 20, 1916, on the need for free access to birth control which was banned by the Comstock laws. Her visits to Union Square pulled hundreds of followers; some of these rallies resulted in her arrest. Union Square has been used as a platform to raise awareness about the Black Lives Matter movement. The Square's shopping district saw strikes in the S. Klein and Ohrbach department stores in 1934. White collar workers were among the worst paid in Great Depression era New York City, with union memberships being highly discouraged by store managers and often seen as fireable offenses. These strikes often involved acts of disobedience by the workers as many of them did not want to lose their jobs. This period saw Union Square as a gathering point for many of the cities socialist and communist groups. The centennial of Union Square was seen as a thinly veiled effort to displace those elements with its draping of the square with flags and police demonstrations of anti protester drills. Street chess The Villager, a local newspaper, reported in 2013 that most of the street chess players at Washington Square Park—where Bobby Fischer had played—had moved their games to Union Square because the latter had more foot traffic. Street chess players play fast chess with passers-by for three to five dollars a game, with time controls of five minutes on each side being the most common. Writer Lauren Snetiker at the Greenwich Village Society for Historic Preservation also documents this migration of the historical Washington Square Park chess scene to Union Square, noting the "dozens of chess players [who] sit on crates and bring their own boards... as there are no permanent ones like there are in Washington Square Park". Freestyle Hip-Hop Union Square is the site of a regular hip-hop freestyle rap cypher called Legendary Cyphers since