The problems faced by native Canadians (generally called aboriginals or "First Nations" up here) far surpasses that of Black Canadians and is more prominent in the news here. There is a legacy of broken treaties and, far worse, a deliberate campaign to "Europeanize" them. This was carried out in what were called Residential Schools, which were boarding schools where aboriginal families were forced to send there kids. In the name of efficiency, a school couldn't be plunked down in every band, which were small and separated by hundreds of miles. Plus, getting them away from their families would make assimilation easier. Most of these schools were run by clergy and the treatment of the kids was an order of magnitude worse than any you may have heard about (or experienced) at the hands of any Catholic priest. This program started in the 1800's and started to be dismantled by the 1970's, but the last school didn't close until the 90's.
There is a terrible legacy left behind by Residential Schools. Broken families, scarred kids growing into scarred adults; alcoholism and suicide are endemic. Out in the Prairie Provinces, the incarceration rate for aboriginals far exceeds that of other demographics. Street gangs provide the "family" for many of the kids. On an individual basis, people have to be accountable for their crimes, but when we look at it from an overall perspective, Canadians as a nation have to assume a large proportion of the blame.
We can point to the Jews and ask why they have succeeded as a group, despite the adversity they have faced over many centuries, and not resorted to crime on the same scale as others. As a group, Jews have placed a high priority on education which, of course, can only help people prosper. In many countries, Jews were banned from owing land, or held precarious title to it. So, farming wasn't an option for many of them, forcing them to seek employment in fields requiring specialized skills. It could be argued that this was a blessing in disguise, as for most people, farming has never been the road to riches. For hundreds of years, Black Americans had no access to formal education and, even now and for various reasons, educational opportunities are more limited for them than many other demographics.
There are proportionally more younger Black people in the US and Canada (the reasons why are irrelevant) and, as we all know, crime rates are higher amongst younger people - of any background.
My point is, any particular demographic can be more inclined to criminality, given the right (or is that "wrong") circumstances. There is too little variation in the human genome to say, "well, it's in their DNA". We can certainly ask questions about crime rates with a view to improving the lot of that group so that fewer of them feel a need to resort to criminal activity. I just don't think it's fair to ask why one group includes a larger criminal element than another, with the implication that they have a natural or cultural tendency to be that way.