The Power of Teachers Unions in the U.S. 2020-09-22
![](https://media.wnyc.org/i/800/0/c/85/2020/09/school_w5m33SA.png)
Teachers sit outside PS 139 in Ditmas Park, Brooklyn in protest over the city's school reopening plan.
( JESSICA GOULD/WNYC )
( JESSICA GOULD/WNYC )