Horseshit. This isn't a criminal conviction, the standard of mens rea doesn't and shouldn't apply. To add a good faith loophole only incentivizes two things: purposeful ignorance and lying.
The problem here is that the police ALREADY have systems upon systems upon systems in place to ensure they never have to take accountability, ever. Police _literally_ get away with murder, but more importantly, they routinely get away with lesser offenses.
I mean, if we can't even charge someone like Chauvin without first burning down a few cities, could you just imagine how many clerical errors get swept under the rug? How much false evidence is floating around? How many innocent people are behind bars?
