That's easy: https://www.theatlantic.com/magazine/archive/2010/05/the-wrong-man/308019/
You decide some guy did it, ruin that guy's life until he's falsely convicted or the public forgets all about it. Then if neither of those work after six years you maybe look into other options.
Ask me how you solve a bombing at the Olympics.
Probably true I suppose. But he had SOME chance of being elected. I'm not sure that's true of anyone else. I guess we'll see and like I said, I hope I'm wrong.