Strikebreaking via Multiculturalism

From the Wikipedia article on the Ludlow Massacre, the 1914 deaths of striking coal miners at the hands of agents of the Colorado Fuel & Iron Company:

To break or prevent strikes, the coal companies hired strike breakers, mainly from Mexico and southern and eastern Europe. CF&I's management mixed immigrants of different nationalities in the mines, a practice which discouraged communication that might lead to organization.

The more things change, the more they stay the same.