It’s really not that hard to understand. People want wealth and power. Wealth can get you power, but power can also get you wealth. Was Mao wealthy? No, but he could acquire power and become wealthy. Was Castro wealthy? No, but he could acquire power and become wealthy. Was Stalin wealthy? No, but he could acquire power and become wealthy. Was Hitler wealthy? No, but he could acquire power and become wealthy.
You acquire power by gathering people to your cause/political party. When you have power, then you acquire other people’s wealth.
Communism, socialism, income redistribution, environmentalism, fairness doctrine, social justice, liberalism, progressivism......all just names to gain power to seize other people’s wealth for yourself. You might give a crumb to your followers, but the main thing is for you to have power so you can take other people’s wealth for YOURSELF. Welcome to the Democrat party. A loose conglomeration of thieves all trying for power so they can take other people’s wealth (Even if those people don’t have a lot of wealth because it all adds up).