Imagine if a place like Kyoto, Japan suddenly had to build millions of new housing units to accomodate Third Worlders, entire Japanese neighbourhoods suddenly become enclaves of Punjab and Nigeria, cherry blossom trees mixed with the stench of Indian curry and body odour, Third Worlders suddenly find themselves in an ancient Japanese city with open gates and unlocked sliding doors, just expensive products and artifacts laying out in the open, where law and order are entirely dependent on unspoken cultural rules and manners. Where every morning the inhabitants without fail clean up the sidewalks and streets by sweeping and splashing water, all because of unspoken cultural rules and manners, suddenly having to accomodate millions of Singhs and Tyrones. Where the manicured parks and gardens are kept clean by a voluntary labour force of elderly people who do it out of cultural considerations, suddenly having to contend with Gurpreet defacating in public, or Mufasa expecting the elderly to clean up after himself.
It would be disastrous.
That's literally what is happening in Canada and it's tragic. Tolerance means we're going to have to rely on law enforcement and a servant class to keep things in order because expecting people to assimilate and be civilized would be discriminatory.