I think the main reason I think people have a right to their own stuff is mainly because of the Ten Commandments but I believe that my sense of this was probably deepened by learning Torah and Ethics. Since then whenever I see government schemes to take stuff from people as in Socialism or when I see theft and fraud not from government my sense of outrage is ignited. But that does need a kind of taking back Hegel from the Left. If you want to defend people's right you can not let the Left use Hegel anymore. You need to take from them their ammunition.
My neighbor, John Factor, (brother of Max Factor) really summed up the problem one day for me. He as (all Reform Jews in those days) adopted the basic world view of Leftism. He must have thought all blacks needed was a helping hand. So he gave them a million dollars to build a sort of sports center (in or near the black areas in downtown LA). His comment to me was "They never even said, 'Thank you.'" Six immortal words that to me sums up the whole problem.
I remember one black fellow telling me the same basic idea way back then before any of this problem had started. I forget the exact words but his idea was essentially this “We (the black community) are gong to bring down and destroy the USA.” That is he meant it as intention, not as a by product of wrong polices.