This article directly opposes your position.

It doesn't. The passage you quoted here nicely explains. The point of the passage is why the average worker in the west rejects communism. It doesn't provide cover for those actively spreading and positively engaging with racist propaganda. It illuminates the problem with our counter-propaganda and gives us a way forward.

From the same article:

1. Stop accusing the masses of being “brainwashed.” Stop treating them as cattle, stop attempting to rouse them into action by scolding them with exposure to “unpleasant truths.”
2. Accept instead that they have been avoiding those truths for a reason. You were able to break through the propaganda barrier, and so could they if they really wanted to. Many of these people see you as the fool, and in many cases not without reason.
3. Understanding people as intelligent beings, craft a political strategy that convincingly makes the case for why they and their lot are very likely to benefit from joining your political project. Not in some utopian infinite timescale, but soon.
4. If you cannot make this case, then forget about convincing the person in question. Focus instead on finding other people to whom such a case can be made. This will lead you directly to class analysis.

The key point for this discussion being number 4. The ones that are choosing to be racist will not be convinced by us, and a lot of the people in the west today simply live comfortable lives (especially relative to the Third World) that they don't want to change. In part, the racism gives them justification for this. An example.