which also references an effort to use the media to quietly disseminate Google’s point of view about unionized tech workplaces.

Bogas’ order references an effort by Google executives, including corporate counsel Christina Latta, to “find a ‘respected voice to publish an op-ed outlining what a unionized tech workplace would look like,” and urging employees of Facebook, Microsoft, Amazon, and Google not to unionize.

in an internal message Google human resources director Kara Silverstein told Latta that she liked the idea, “but that it should be done so that there ‘would be no fingerprints and not Google specific.’”

From the article posted by 100_kg_90_de_belin.

Google seemingly does care about their internal image, so they will only make their actions obvious when they fire you for bogus reasons after wanting to join a union.
Quite nasty in that they give you no hints about how extreme their efforts on this are. They monitor internal employee tools like they are cosplaying the NSA, but you wouldn't know before you are fired out of the blue.