"That's what they  want  most people to think. They do some research, but mostly are in charge of keeping the dangerous information out of the public eye; keeping others from speaking up about it. But the point is that the Ministry is in shambles, and they're trying to clean it all up. During the war, they kept a lot of secrets away from Voldemort when he tried running things. So as an act of good faith, I have to help prove that the Ministry I'm helping to reform with Kingsley is a stabilizing force. But that's why the Horcruxes haven't been brought up publicly, and same for the Deathly Hallows."