When Mexican-American fieldworkers' strikes didn't net results, César Chávez led the Ventura County Community Service Organization in alternate tactics.
The July 30, 1975, disappearance of labor leader Jimmy Hoffa sparked public fascination because he was an important cog in the nation's economy.
May Day has traditionally focused on labor and working class issues. Immigration and immigrant labor adds a new dimension to the holiday.
In the early twentieth-century, some aristocratic college men were eager to prove their masculinity by working as strikebreakers.