Watch FMovies. In 1960, the announcement of social regression measures decided by the Belgian government triggered a wildcat strike by workers. Albert and Fred were at the forefront of a struggle that promised to be heated and risky. The great Walloon strike shook Belgium to its core. Violence, demonstrations, internationalists, red flags, Walloon flags. For five weeks, the country was paralyzed by a movement that often took on the air of an insurrection.