The US has religiously exclusive communities. South Africa today has small racially exclusive communities. Such as Oranje which Nelson Mandela visited and met there with the widow of Prime Minister Vervoed an Apartheid ideologue. Israel already has exclusive communities, buildings, suburbs that exclude secular Jews or Jews who have not served in the Army. Let small communities exist who want to be exclusive based on certain values, religious or other as long as they are not specifically excluding people based on race or other physical criteria.. Let them live in isolation as long as there is no discrimination in the places where well over 90% of the population live.
Denver Broncos beat Carolina Panthers 24-10, winning Super Bowl 50 (Haaretz)
from the article: South Africa is already here