Compean never denied picking up casings and throwing them into the ditch. Ramos didn't touch a thing. It wasn't "evidence" until Sutton decided it was. The van was "evidence", it was moved. The shotgun was "evidence", it was moved. The dirt all over Compean was "evidence", it was moved. The slight injuries sustained by Compean were cleaned by him, those were "evidence". The cell phone in the van was "evidence" and should have been damn good evidence, but the state did not provide it. etc.
Doesn't sound like something he'd have been trained to do. Why would he do it?
It wasn't "evidence" until Sutton decided it was.
So it was okay to destroy evidence? Is that your claim?