Quebec police are refusing to answer questions from the oversight body investigating civilian deaths and serious injuries during police interventions. This is after

[Police] unions also challenged the obligation for officers to meet with … investigators. They argued that those rules infringed on their members’ constitutional rights to stay silent and not incriminate themselves.

It’s part of a national trend:

in British Columbia, police officers rarely co-operate with the Independent Investigations Office …, while they often only partly co-operate with independent oversight bodies in other provinces.