Lots of past cases may be tossed and guilty perps let go because of these bad apples.
Too bad. Better that a thousand guilty men walk free than one innocent man be falsely jailed. Maybe next time they'll actually do their jobs instead of taking a shortcut.
Personally, I think that all police should be required to wear recording equipment while on duty. After all, as they tell us, if they have nothing to hide, why should they care? It'd protect them against frivolous lawsuits as well - and it would give citizens the means of supervising the police.