@flash, propaganda, those with views which differ from your have been convinced by propaganda in service of the wealthy.
Now i don't think there is some conspiracy going on, but power can't exist without support. So it is necessary that successful power systems have a propaganda arm promoting their power.
So, again with a marxist slant, the lower classes are oppressed by employers profiting from their labour, and the upper class hold the majority of the power. As with most power systems, it acts to defend itself (or it wouldn't exist) and in a liberal society, where you can't use violence to control people, you must use words. Which is the propoganda... (which you might think is a good thing.... especially if you've ever lived in a system where the state does use violence).
So where you see people arguing that money should be concentrated in the hands of the few, and not used to support the poor, whether through education or healthcare, you are seeing the effect of propaganda.
They come up with silly justifications like 'forced labour' to distract those who disagree; but then we're all good at coming up with rationalization to justify whatever position we happen to take in a given situation... So that side of it, at least, is human nature, a psychological defence mechanism - to make us think we're always right.