Politics

God cop, bad cop politics.

"In the United States, the Republican Party plays the "bad cop" with its absurd and destructive vendettas against gay marriage, immigration, science, environmentalism, and other causes which would be uncontroversial in a rational society.
The Democrats, meanwhile, play the "good cop" by tending to support good legislation (which the Republicans oppose) and to work against bad legislation (sponsored and supported by Republicans) -- while deeply in the pocket of large corporate interests, and working more subtly to support these interests over the interests of their constituents."

That's a very leftist interpretation. Many conservatives would say that Democrat for should be substituted for Republican in this description. Each party plays good cop to its constituents and bad cop to the other, and by doing so they work together to divide and conquer us.