Dark money group’s donors revealed

From ProPublica:

The donors wrote notes on their checks like "Go get 'em!" or "Stop Obama." They scrawled in names of candidates for office in Montana and Colorado, or simply "oil & gas."
But unlike donors to political committees, the names of those who gave to Western Tradition Partnership, or WTP, were never supposed to be made public.
That changed Friday after a Montana district court judge released the social welfare nonprofit's bank records at the request of Frontline and ProPublica, saying citizens had a right to know.
It was the first time that a court has ordered a modern dark money group's donors to be made public, firing a warning shot to similar organizations engaged in politics.