You were, in your now flagged comment, arguing for stifling (or censoring if you prefer) people who, you believe, hold that kind of opinion.
The point I am making is that morality is only part of it. In practice, it doesn't matter that you're right if you're dead. You say that
> tolerating promotion of oppression doesn't make it go away
I'll answer that arguing with words without understanding the process that allows for people to agree to "fight" with words rather than weapons is even less likely to make bad ideas go away.
This won't convince you, I know, the tone of your replies shows an adversarial reading of my comments. But maybe one day you'll have a more skeptical approach to your own beliefs.