By implementing the thing Marxist-leninists were loathe to implement despite giving a lot of lip service. Actual communism. Not the Engles lenin variety. But the kind Marx spoke on. The thing to remember is that the Soviet Communist party was as communist as the national socialist party of Germany was socialist. Which is to say neither of them were.

This of course all starts with actual large scale engagement. We absolutely need to change the voting system etc as a start. For all the flaws and problems of the founding fathers, the fact that they saw us needing to largely rewrite the Constitution every few decades, let alone every few hundred years was not one of their flaws.

Then we need to uncap the House of Representatives. That's a century overdue. Followed by abolishing the electoral college. Then reforming the house, Senate, judiciary and even the concept of the presidency. Basically take as many steps as necessary to make things as democratic/granular as possible. Dilute power.

One of the other important things we could do is abolishing the concept of private property. Private property is little more than theft. Allowing the wealthy to horde resources to the detriment of everyone else. If you own a home, you should be living in it. It shouldn't be some sort of an investment that you never spend time in. Used for speculation on markets etc. Replace private property with something much more sane like the more limited concept of personal property. As in property, a person would actually use themselves. Tying legal fines and fees to a person's income and wealth along with impartial enforcement is another good start.