Investigative reporter George Joseph writes in “The Nation” about the battle inside Los Angeles’ largest charter chain over whether teachers should be permitted to form a union.

A group of teachers at Alliance College-Ready Public Schools announced their wish to form a union last spring. Since then, the charter chain has fought them to prevent their efforts from succeeding.

This is a crucial battle for Alliance because its CEO is Daniel Katzir, who was executive director of the Broad Foundation for a decade. The business model for the Broad charter plan depends on having a non-union workforce with steady turnover and long working hours.

Broad’s goal of getting half the children in L.A. into charters would be disrupted if the teachers at Alliance were allowed to go union. Now Alliance is pulling out the stops to turn parents against a union and to intimidate teachers who might want to join.

And, of course, the chain insists it is private, not public (despite its name), and therefore not required to honor fair labor practices. When you read about the management ‘s tactics, the only missing ingredient is the Pinkerton private detectives, who were hired by management in the 19th century to infiltrate unions, disrupt them, and break up labor protests.