Bit of a difference here, George.
AFAIK, "Black History Month", "Aboriginal Week", and the likes are movements that start in the actual communities they represent and grow over time into an accepted and recognized celebration of these communities. They do not rely on legislation for their existence, even though they may eventually get recognition through a formal motion adopted by the appropriate legislative assembly.
Here we are talking about a politician driven initiative - not a community one - not called for and sort of imposing this "month" on a religion that hasn't asked for it. At least, unless somebody tells me otherwise, I have not been aware, so far, in Canada of any movement by the Muslim communities for a special month of recognition or "cultural" activity.
Also, this declaration, to me, smacks of anti-semitism: There is no way in ... well, hell ... that these legislators can ignore (or ought to ignore if they decide to play on the religious field of play) that October is the month that encompasses most (and the more important ones) Jewish high-holidays.