🙋🏻‍♂️ Dumb question: What is being protested? What would the result of a “successful” protest be?

Passengers*, I think. I’m pretty sure passenger vehicles are subject to higher quality standards than vehicles meant only for cargo (ISS supplies, for example).

(I could be wrong. I’m an internet comment, not a rocket surgeon 🤷🏻‍♂️)

Where can I learn more about this stuff?