I think what you might want to consider is that Black prisoners are overrepresented in the SIUs, so they're overrepresented in the Correctional Service of Canada to begin with. About 30% of prisoners in CSC facilities are Black, and close to 40% are going into the SIUs.
Going back to the risk assessment issue, the problem is that what we know about risk assessment is that the validity of the risk assessment seems to vary with the group. We know quite well that the risk assessment tools that are used by CSC do not work well for women and do not work well for indigenous people. I have less information about whether they work as well or as badly for Blacks as they do for others, but I think it's fair to say that in this sense what we don't know is very important.
As Professor Sprott just pointed out, the difficulty is that these things are not being looked at by the Correctional Service of Canada. They are, in a sense, largely being ignored. Even the issue of the overrepresentation of Blacks in the SIUs or the fact that Blacks are spending more time in the SIUs is not something the Correctional Service of Canada itself ever talks about.