Potential Trouble

Police forces breaking up a gathering along the waterfront in San Francisco on the eve of the General Strike which involved over 200,000 workers. (General Photographic Agency/Getty Images)

Police forces breaking up a gathering along the waterfront in San Francisco on the eve of the General Strike which involved over 200,000 workers. (General Photographic Agency/Getty Images)

Police forces breaking up a gathering along the waterfront in San Francisco on the eve of the General Strike which involved over 200,000 workers. (Photo by General Photographic Agency/Getty Images)