One problem is that no one can confirm that the missing folks are dead. Rescue crews only managed to confirm about 200 dead - the rest of the bodies likely no longer resemble bodies.
Early reports placed the number of Canadians missing around 500 but that estimate has been revised downward to about 50.
If 50 Canadians were shot to death in one day our PM would be heard through every media outlet denouncing private ownership of firearms. But - likely because a realistic response to this incident requires police, military and national security resources that have been allocated elsewhere throughout the last decade of Liberal leadership - PM Chretien has been waffling heavily. The very people our PM needs to fix this problem owe him no favors and probably didn't vote for him.
Simply put, it is not in our government's interest to publicize or emphasize Canadian casualties because any solution they could now deliver would be weaker and less effective than what might have been possible before they took office.
Edited to add a URL listing known Canadian missing/dead linked to the attacks:
[URL]http://www.thestar.com/NASApp/cs/ContentServer?pagename=thestar/Layout/Article_Type1&c=Article&cid=1000678165824&call_page=TS_Canada&call_pageid=968332188774&call_pagepath=News/Canada&col=968350116467[/URL]