Off duty officers turned away from concert at Louisville Palace

They can go to SID if their chain of command is part of the problem

Members are required to immediately notify their commanding officer or civilian supervisor of:

Any violations of laws.

Violations of orders, policies or procedures.

Disobedience of orders by other members.

Mismanagement related to the effective and efficient operations of the department.

The supervisor or commanding officer must document specific violations.

Members inhibited by the chain of command from reporting misconduct are required to submit the information

directly to the Chief of Police or to the Special Investigations Division (SID) Commander, in writing.

Yes they absolutely can and do. You are misinformed.