Not sure who you're addressing here? But perhaps you should get your facts straight first. According to Stats Canada data, as reported in Wikipedia, in 2016 22.3% of Canadian residents, or more than 7.674 million people out of a general population of 34.46 million, were members of non-indigenous visible minorities. (See link below) Further over the two-decade period from 1996 to 2016 the percentage of the "European" or white people in Canada dropped from 86% of 72.9% of the total population and even more strikingly the number of European or white people fell in absolute terms between 2011 and 2016. I'd have to do some research, but I suspect this is likely the first time since census figures have been compiled in Canada that this has occurred. These statistics are indicative of what demographers would no doubt characterize as a massive demographic shift. I don't think anybody on here is arguing "against" any particular culture but I suspect many Canadians oppose the government's tribal approach to multiculturalism, which focuses on difference rather than integration and commonality. People tend to react against change, particularly when they perceive they are personally disadvantaged by it. And they tend to react even more negatively to significant change, especially when they believe it's being arbitrarily imposed. It's human nature. Do you think mainstream Canadians are not ordinary human beings?
https://en.wikipedia.org/wiki/Demographics_of_Canada#Visible_minority_population