May Day 2006 marchers

When did May Day Turn Into an Immigrants’ Rights Day?

May Day has traditionally focused on labor and working class issues. Immigration and immigrant labor adds a new dimension to the holiday.
"MI Right-to-Work Protest - 11 December 2012 - crowd2" by File made available by Equality Michigan through the LGBT Free Media CollectiveEnglish | +/− - File made available by Equality Michigan through the LGBT Free Media CollectiveEnglish | +/−. Licensed under CC BY-SA 3.0 via <a href="https://commons.wikimedia.org/wiki/File:MI_Right-to-Work_Protest_-_11_December_2012_-_crowd2.jpeg#/media/File:MI_Right-to-Work_Protest_-_11_December_2012_-_crowd2.jpeg">Wikimedia Commons</a>

Scott Walker, The Koch Brothers, and the History of Right to Work Laws

The Taft-Hartley Act of 1947 gave states the ability to enact right to work laws, granting opponents of unions the ability to institute open-shop laws.
William P. Jones

Labor Unions, Public Employees, and Race: And Interview with William P. Jones

An interview with scholar William P. Jones on labor unions, public employees, and race.