In the Chauvin case all three of the bystanders were sent to prison by federal courts specifically for civil rights violations stemming from their failure to intervene as Derek Chauvin murdered George Floyd in front of them.
QI applies to civil cases. IIRC, Chauvin didn’t face a civil case and was not made to pay damages for violations of anybody’s rights. Nor did the other officers.
If a cop violates your rights, you just have to pray the DA will prosecute criminal charges. But you still won’t get an monetary damages from the cop. You might talk the state into settling.
Exception that proves that rule. It took national protests over months, during COVID, to drive that case through to conviction.