From the article, only about 700 were actually ''interned'' as pow's, the rest were simply robbed blind and forced to move to the interior of BC into highly inadequate housing. Not sure how you can use a category to show all this, nor how many profiles you can tie it to. Would take a whole lot of work to create profiles for whole families affected, and you don't want to leave them orphaned.
I was part of the Empress of Ireland Project we did in 2014 as commemoration for the sinking of that ship. Only involved about 1200 people, and to this day the majority are not tied to our tree, once in a while someone comes along who identifies them and can add to their bio and family. You are looking at over 12 thousand to 20 thousand people affected by this. Massive job.