Sadly, that is not true at all. There are multiple high security penitentiaries within a couple hours from here. I can guarantee you that most of the inmates cannot handle freedom responsibly, and that no matter what you do (within current legal, moral / ethical, and technical bounds), there is NOTHING that will return most of these people to civil society as productive citizens who can stay out of trouble. They have been so twisted in their formative years, or are just plain incurably mentally ill, that about the best that can be hoped for is that when they get out (assuming they do) either they get caught quickly when they commit some new crime, or maybe they are too aged / no longer physically able to do much harm. SOME may "get religion" and stick with it, and a fewer number may be able to otherwise rehabilitate, but daunting numbers never really do. This is statistical fact.
When it comes to countries, we again have a dynamic where the education system, culture, and formative years are key. You mention your own ancestry, but, it is still a background and culture that assimilates fairly easily (in relative terms) into "American" culture. Not all Americans were "accepting" of many immigrants in the past, of course, but, by and large, Irish-American, Italian-American, German-American, etc. immigrants were able to "Americanize" enough that with time they were generally accepted. Some (Chinese Americans, for example) assimilated more slowly, but gradually earned acceptance through hard work and (generally) staying out of trouble.)
In the international realm, what we see is that it generally takes a lot of "background" for freedom to work. That and in some cases a bit of "luck" in who comes to power when a country goes from a despotic, enslaved, or otherwise "controlled" past, to Western style freedom. In a humbling number of cases (countries), freedom lead to great misery and evil. Neither the people nor their leaders were ready for "freedom".
Or, sorry, do trumpist not conform to ‘all men are created equal’ anymore?
This is a very misunderstood phrase. I would refer you to the Federalist papers for study in depth. For one thing, it refers to citizens of a country - our founders never intended that, say, Italians should have a say in US affairs, or equal opportunity here to that of US citizens. But, briefly, it is true in the sense that the Founders thought each subject of a country should have an equal shot at proving their worth, and (maybe this is just my opinion) that any human (excepting criminals, I suppose) deserved a certain level of dignity and fair treatment. It does NOT mean that, for example, a businessman has to flip a coin when selecting a more qualified job applicant over a less qualified applicant "to make it fair". It comes nowhere near the subject of who might be allowed to enter the country -- that was addressed later.
More to follow, and please keep the link in my next post in mind. :-)
You won’t be seeing him no more.