A barricae is any object or structure that creates a barrier or obstacle to control, block passage or force the flow of traffic in the desired direction. The very first barricades in the streets of Paris, a feature of the French Revolution and urban rebellions ever since, went up on the Day of the Barricades, 12 May 1588, when an organized rebellion of Parisians forced Henri III from Paris, leaving it in the hands of the Catholic League. Wagons, timbers and hogsheads (barriques) were chained together to impede the movements of Swiss Guards and other forces loyal to the king.