Vito Marcantonio,
Labor's Martyrs: Haymarket 1887…
“ The lives of Parsons, Fischer, Engel, Spies and Lingg, and Sacco and Vanzetti, must be made more than ever the inspiration of the proletarian youth. We must indeed realize in life the noble last words of Spies, spoken as he stood on the gallows with the hangman's noose around his neck: "There will come a time when our silence will be more powerful than the voices you are strangling today." ”
