A society has to put its needs first, it’s natural to do so, and just as individuals can’t help others without first helping themselves, neither can societies.
Before allowing newcomers, a society needs to ask itself some questions.
How big do we want our population to be?
More isn’t necessarily merrier, more people means less resources to go around, less jobs, more crowds, noise, pollution and waste.
A lot of confusion and dissonance can arise between diverse cultures and races.
Of course newcomers can be enriching, there may be a surplus of resources, jobs and space.
Our culture and genepool can be enriched, as well as impoverished by others.
Others may be more compatible with the native population than some.
So too must a society decide which of its citizens are desirable, and what happens to undesirables, are they to be re-educated, institutionalized, incarcerated, exiled or executed?
A libertarian would say only people who’re violent, or commit fraud should be excluded, a liberal would say only those who bully, or are discriminatory, a conservative in western society might say drug addicts, gays and Jews, a conservative in an Asian society might say people who drink alcohol, eat pork or beef, and so on, it depends on whatever religion or ideology is popular there, and their customs, mores.
The religion Science, which concerns itself more with health than ethics, and which in recent times has become heavily corporatized and politicized, says people who don’t vaccinate their children should have them taken away from them by the state, and many liberals concur, despite such laws being arguably discriminatory, they also think milk MUST be ‘pasteurized’ and homogenized (Louis Pasteur is one of their most esteemed and renowned prophets).
Some Scientists believe so called ‘schizophrenics’, ‘conspiracy theorists’ and other ‘thought criminals’ should be placed in padded cells without their consent.
Walls are normal, aside from a few vagrants, we all live within them.
Even foxes have their dens and birds their nests.
We invite some people to come and stay with us, temporarily or for the long haul, and we keep the rest out.
Societies are no different, we all draw the line somewhere.
A society fails, not when it’s libertarian, liberal or conservative, but when it becomes imbalanced, when it goes in one direction for too long, or too fast/soon.
A society becomes unhealthy when libertarians, liberals and conservatives perceive themselves as enemies, which itself is a form of exclusion, rather than allies with a common objective, the welfare of their republic.
These three ways need each other, no society could follow just one for very long.
It’s not just societies and governments but individuals decide who their friends and foes are, and you know what they say, birds of a feather…