There's a lot of hubub about qualified immunity these days, but it only shields individuals from individual civil responsibility, it does not shield organizations from organizational responsibility for the actions of individuals under their employ.
Chances are, parties would sue the organization anyway, as the individuals are unlikely to be able to pay significant damages.
The police forces are managed by elected officials, who are elected by taxpayers. These politicians should be held to account by voters for either their lack of leadership on police abuse of force (my preference) or their lack of fiscal responsibility in allowing police abuse of force to continue, accruing large legal bills and settlements (and increased liability insurance costs, presumably).