A leftist Marxist political code word for "wipe out Whitey". Multiculturalism is the state religion of all countries that are predominately White. Liberals have no problem with countries like Japan or Nigeria being racially solid, but all White countries NEED diversity!
(An American family driving through London, England)
Kid: Mom, I thought we were in England, this looks like Pakistan!
Mom: You're so insensitive you obviously know nothing about multiculturalism!!