Community standards cannot exist in a diverse multicultural society because there no longer is a broad agreement on what those standards should be. Even things as basic as prohibitions on murder have various different "well, in this particular situation" exclusions that differ by culture. So anything that used to be community enforced now has to be elevated to legal enforcement, with some cultures disadvantaged and others favored by the choice of what the government will enforce on all regardless of individual cultural standards.
Or we can let different communities and cultures keep their different social norms and accept a bit of friction/"injustice" when people from one culture interact with another.
