As a prosecutor, I used to let the defense attorney grill the fuck out of cops who I thought may be fudging facts/filling in the gaps without hard facts.

I had no skin in the game if the cops fucked up their reports/investigation/arrests. I sought justice every day I walked in the room. If that meant dropping a case, letting a defense attorney go down some questioning that I could object to but don't need to, etc. I'd do what needed to be done.

It also helps that my district had a good relationship with the defense attorneys. If there was a genuine question to be answered about the state's case, we'd let the defense attorneys poke at it, likewise, if there was clear evidence of a crime, the defense attorneys would play ball during plea negotiations.

Sometimes you had defendants who wouldn't play ball plea-wise, and we'd all just go about it like professionals. But most of the time it was pretty business-as-usual. They'd advocate fully for their clients, we'd present the state's evidence. The judge/jury would make a decision.

Its a blessing when you are a prosecutor in a country that actually cares about justice. I couldn't handle having someone breathing down my neck for following my conscious when deciding which people to prosecute.