Today in Labor History January 31, 1919: Bloody Friday occurred when 60,000 demonstrators gathered in George Square, Glasgow, Scotland, in support of a strike. Police launched a vicious and unprovoked attack, bashing heads with their batons. Protesters retaliated with fists, broken bottles and iron railings, forcing the police to retreat. An estimated 10,000 British troops were sent to quash the battle. One cop died months later from injuries sustained during the battle. The strike occurred in the wake of World War I in response to high unemployment. The Scottish TUC and Clyde Workers’ Committee wanted to increase job openings by reducing the work week from 47 hours to 40.