* May 3, police killed 4 strikers → next day, a rally in __ Square protesting the killings. Someone threw a bomb into the crowd, killing a policeman, causing police to open fire. Police later raided offices of labor and radical groups, arresting their leaders.
* Employers used __ to paint labor movement as dangerous, un-American, violent, controlled by foreign-born radicals
* 8 anarchists, most foreign-born, called __ martyrs, charged w/ weak evidence for carrying out bombing