More than thirty workers have been killed by police at a platinum mine in South Africa. The workers, who were armed, were staging what police said was an illegal strike.
It's International Workers' Day — organized by unions and left-leaning political parties across the world. Thousands of protesters are out on the streets in Greece, France and even Russia.
A strike by the union representing office building workers hasn't happened in more than a decade, but Occupy Wall Street and the 99 percent mentality have given union members more confidence lately.
