This is a powerful meme
It is the idea that since there are so many poor people in the world, and so much wealth concentrated in the hands of a few rich people, the poor should just take it and redistribute wealth more evenly. However, it is always thwarted because the rich control politics and do everything they can to keep themselves in power. Depending on how much power the people have, the rich can be forced to make some grudging concessions, such as minimum wage in America, or legalized trade unions.
However, in countries where the people don't have as much power, the rich never allow that sort of thing. There, union leaders and civil or human rights activists are usually just killed or disappeared by death squads.