Susana Prieto Terrazas is not a woman to trifle with. In recent years, the attorney became the most well-known labor organizer in Mexico, a burr in the saddle of factory owners, the local governments they’ve coopted, and many of Mexico’s unions. Yes, the unions. In Mexico, most worker organizations that make contracts with employers are seen as “protection” unions: Rather than representing workers through a democratic process, these unions are typically in cahoots with employers and work to keep wages down.
https://qz.com/2012514/its-time-to-learn-if-new-nafta-really-protects-workers/