Conspiracy makes no sense on any level whatsoever. Why would they use not one not two but three witnesses? They could have just used...0. And two of them are still at large and would still be huge loose ends. What's stopping them from going on twitter and saying they're being framed as part of a conspiracy? Actually they need to do this anyways because apparently a bunch of distinguished mentally-challenged fellows will believe it. And then they shoot the third witness. This one has to be in on it and for reasons be willing to take a murder charge but we'll even ignore that stupidity. The cops dont kill him, just shoot him so that he may be a loose end too. Makes total sense.