>The internal investigation has determined that our CEO had no knowledge of this, and that the bloody pig mask was all the idea of the people who make less money, and also we fired the CEO for unrelated reasons.

That's exactly how the criminal justice system should work? If you can't prove a particular person is responsible, you don't have a case. That's exactly why they prosecuted the company as a whole instead, because easier to prove the company as a whole did something, rather than a specific person.