Black people are no longer a minority group in the world and thus should not get a free pass on discrimnatory events about their race alone. The vast majority of black people arrived in Canada as free people, migrants, just like most of the Canadian population. They did not arrive as slaves nor were they ever 'kept' as slaves in Canada. 

If I were to run the 'White Businessman's Association' where we celebrated 'Whiteness' there would be howls of discrimination and I would probably be sent to jail. The days of claiming Canada is a 'white country' and thus non-whites need special attention, are long over. The only people in Canada with a legitimate grievence are the First Nations: show some respect.