https://www.vice.com/en_us/article/g5bxn4/uber-forced-drivers-to-click-on-political-ads-ahead-of-vote-on-gig-worker-rights

Uber forced customers and drivers to click on political pop-up ads on its app in support of an upcoming California ballot initiative, known as Proposition 22, which would exempt gig economy companies from providing all of their workers with basic rights and workplace protections, such as overtime pay, sick days, and unemployment insurance.  

Before ordering a ride, California passengers had to click through two messages: "If Prop 22 fails to pass… Your price per ride could increase by 25-100%…..Your area might lose reliable rideshare service," one of them read.