The upcoming legal challenge of Quebec’s secularism law, Bill 21, before the Supreme Court of Canada has evolved from a fight over whether teachers can wear hijabs in the classroom into a debate over who should get the final say when deciding basic questions of rights and freedoms in Canada: courts or elected legislatures? It’s a question that resonates more than ever, as some other Canadian provinces are joining Quebec in suspending people’s constitutional rights . “There's huge implications for the country as a whole from coast to coast to coast on this,” University of Ottawa law professor Errol Mendes told CBC News. The arguments before the Supreme Court begin March 23.  The top court will hear from Quebec’s attorney general, teachers and religious and civil rights groups challenging the law, from five other provinces and the federal government, and dozens of groups and individuals intervening in the case.…