This is actually the opening of the new modern reboot of "Taxi Driver" starring Jesse Eisenberg as Travis Bickle... Don't worry, it gets better later on when Jonah Hill shows up as a pimp.
I think you mistyped your title. It's protection FROM taxi drivers that we need. That red octagonal thingy on the side of the road? Yeah, that's a stop sign. I means for you to stop. That's why it has the word "STOP" painted on it.