July 1851
Two railroad strikers were shot dead and others injured by the state militia in Portgage, New York.

July 1903
Labor organizer Mary Harris (“Mother”) Jones leads child workers in demanding a 55 hour work week.

I could not find much on the history of labor for 01 July, so my first posts of the month will be the history I found for the month not necessarily happened on the 1st of the month.