One way worked in Turkey for 90+ years, go figure. Look what happened after Erdogan "reformed" secular restrictions...  Accommodating fundamentalists only entrenches their beliefs, once they reach a critical mass, they feel no need to integrate and the results speak for themselves in terms of the social division and segregated communities where women are forced to submit to male authority under the guise of modesty and piety. Private religious schools, transplanted wahabi/salafi imams, showing deference to religious laws in certain neighborhoods - why should Canada emulate Europe's failures as they try to play catch-up after 15 years of political impotence. The fact that the niqab isn't common in Canada is a function of progress. Gender equality, LGBT rights, religious satire - are all absent wherever the niqab is common, go figure. Appeasement and accommodation failed, the niqab is a symbol of uncivilized societies where women are treated like second class citizens.