next big issue will be having religious holidays for other faiths.
Presently Canada has Christmas Day, New Years Day, and Good Friday off.
These are all based on the Christian religion. A court challenge will be made in the next few years demanding Muslims have their religious holidays. The courts and Justin will side with the Muslims.  Once that happens Hindus, Sikhs, Jews and others will demand the same treatment.
This is the beauty of a multicultural society it does not work.