San Pedro, California was a hotbed of Industrial Workers of the World (IWW) activity during the 1910s and early 1920s. IWW efforts to organize workers were often met with violence by individuals and organizations that saw them as a threat.
In June 1924, the Ku Klux Klan attacked the members of the San Pedro IWW at their meeting hall during a benefit for two workers killed in a railroad accident. The KKK beat many of the 300 members; kidnapped, tarred, and feathered others; destroyed the meeting hall, and scalded two children by burning them with a pot of coffee. The two children–May Sundsted and Andrew Kruglis–were hospitalized for their burns.