In Pueblo, Colorado back in 2017, a police officer pulled over a suspect for driving while being not innocent of stuff. The car was searched and a gun turned up, along with some heroin. Unfortunately for the policeman, he forgot to turn on his bodycam when he searched the car and found all that damning evidence. He of course had only one option: Put that shit back where he found it when the car was in the impound lot, turn on his camera, and pretend to discover it all over again. Sadly, the gritty reboot of Officer Finds The Shit received terrible reviews, and all of the charges against the suspect were dropped.
Similar things happened in 2017 in Baltimore with three separate videos in a month. In one, an officer with his camera off is filmed by another officer's working camera as he discovers evidence, then drops it, turns on his own camera, and "discovers" it again. They don't seem to be planting evidence that wasn't there before, but it should send up all sorts of red flags that they're so willing to reshoot scenes like they're trying to fix a blockbuster due to poor test screenings.