zlacker

The police are politically powerful and will simply not tolerate that level of accountability. It's hard enough to fire them when they commit outright murder.

Also, the entire institution of police/prosecutors/courts/judges need a disincentive against misconduct not just individuals. Otherwise they can just use a revolving door of disposable/sacrificial cops to violate rights and get convictions.

Allowing convictions to stand in spite of illegal investigation methods makes rules against those methods completely meaningless for defendants.