This is a very good question.
I think that what we would term our representative bureaucracy may be good to help improve perceptions of the police and also perhaps to facilitate good community relations, provided that those racialized officers are policing communities that they're familiar with. I know that a study from a few years ago with the RCMP found, for example, that black officers were being taken from Toronto as their depot and placed in Nova Scotia to communities they had no familiarity with.
Racialized officers are most definitely not the silver bullet, even when they make it to the top of the services they work for. Evidence from the United States, for example, demonstrates that in some jurisdictions African Americans are more likely to be shot by African American police officers than white police officers because those African American officers are deployed to African American areas.
Again, we need to look at the larger structural issues that cause many of the problems that we're talking about. Unfortunately, racialized officers still have to go out and operate in a society in which there are a number of social problems that lead members of the communities they may represent into contact with the police.