The public employees who work in the London Underground ar currently on strike.
Some folks are not happy about this and want to send a message to the workers.
This, I think, does the trick rather well. Probably NSFW.
Yes, the job training is a two-day certification course. Suitable for those who able to read a watch but cannot assemble a Big Mac.
Found via CCinZ
Could be singing about the current occupiers of the White House and the Congressional Building.