Anonymous C joined in and replied with this 3 years ago, 14 minutes later, 34 minutes after the original post[^][v]#1,213,785
They think that because, in practice, they do have that authority.
Most police-involved shootings of minorities are either ignored by the courts, or treated with great leniency.
When police officers see their collogues let off the hook, they feel empowered to try the same thing. When they don't face consequences, it reinforces this expectation.