Uber and Lyft drivers strike
The drivers logged out of the app for the day and voice their anger about working conditions.
Protests took place in New York, Los Angeles, Atlanta, London, and Glasgow among other cities.
Business Insider was on the ground at the London protest and spoke to drivers who demanded better pay to keep up with living costs.
They are also unhappy about how rich some of Uber's investors will get from the upcoming IPO.
A union called the IPO an "orgy of greed."