In the following video, police used deadly physical force against an unarmed man who was initially contacted for violating passenger rules. An investigation is underway to determine whether the shooting involved criminal conduct on the part of police.

Here's the question:

Should the privilege against self-incrimination be extended to police officers facing potential criminal liability?

Video Link: https://www.youtube.com/watch?v=DLVqvYJqATQ&t=5s