Has this matter hit the USSC? Just curious. It sounds more like for the amount of compensation one might get, most parties figure it is not worth sinking the money into the aggressive legal maneuvers needed to get a vindication.
Of course this is one of those times in which one is tempted to doubt there is a God, but people disobeying God and lying does not mean God ceases to exist or ceases to hold people accountable for truth and falsity.
The courts give latitude to the police in an investigation relative to the safety of the officers and the complexity of the investigation. Each case has to be evaluated on its merits whether a detention was excessive and constituted an arrest.