After more than a year of fighting intense and often illegal union busting by Starbucks, the clouds definitively broke for unionizing baristas. Three separate allies came forward midweek in support of the militant workers.

First, dozens of the company’s own white-collar workers went into open revolt, releasing a letter to the public making clear their support for the baristas and opposing new back-to-office rules.

Then, Bernie Sanders’s office announced that the committee he chairs in the US Senate will seek a subpoena to force Howard Schultz, the outgoing CEO of Starbucks, to testify under oath about the company’s labor practices.