This has happened before. After the communist take-over in Russia, Lenin had all private savings confiscated. It didn’t increase his popularity (if there was ever such a thing in the first place) but that was no problem or obstacle as he was in charge by then already.
For your information, the next step was the removal from society of all individuals that didn’t support the glorious socialist ideal or could be suspect of such....
“For your information, the next step was the removal from society of all individuals that didn’t support the glorious socialist ideal or could be suspect of such....”
It can work the other way, too. Check out the French Revolution. If that’s too ancient, read about how a lightly armed Finnish home guard inflicted one million casualties on the invading Russian army in the 1939 Winter War.