https://www.vice.com/en_us/article/wx8x8z/spains-biggest-union-is-suing-amazon-for-spying-on-striking-workers

More evidence of Amazon's widespread worker surveillance program and the company's use of the Pinkerton spy agency has emerged in Spain.

El Diario reported on Monday that Amazon spied on workers planning an October 30, 2019 strike at its BCN1 warehouse in Barcelona. To spy on workers, the outlet reported, Amazon called on the Pinkertons, who subcontracted the job in Catalonia to a local firm named Castor & Polux. A retired police officer, Antonio Giménez Raso, was named as a "police liaison" between Castor & Polux and the Catalonia police force, Mossos d'Esquadra.