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No political system presents an argument for white supremacy that is legitimate and in good faith.
I hope this elaboration of the obvious is helpful.
That's a Soviet idea? It seems national health insurance was first conceived in Imperial Germany[0] (which the Weimar Republic, then the Nazis continued), then adopted in Britain, then Imperial Russia (which presumably the Soviets continued). Get your facts straight.
0. https://en.wikipedia.org/wiki/Universal_health_care#History
Is it? Says who? The Soviets did a great many things. It doesn't mean all of them are "Soviet things". Nationalized healthcare predates the Soviets, still exists in nearly all capitalist countries in one form or another, and is viewed largely positively in each of those countries.
The Soviets had a powerful military and infamous police force. When you say "Soviet Russia" the average person will think "Red Army" and "KGB" before nationalized healthcare. Going by your logic are the military and police "socialist ideas"? They use government money to provide an equal level of service to all inhabitants of the nation - namely protecting and safeguarding them. Police and military obviously predate socialism/communism but the Soviets were renowned for them, so that makes them socialist ideas, right?
Comparing racism in Nazism - a core central tenet, and one that's actively harmful, to nationalized healthcare in communism - an incidental feature, mostly positive, and also found in nearly every capitalist country, is a strawman.
Where? In most of the Western countries that have it, it post-dates WWII, and corresponds to the replacement of capitalism in the relatively pure sense with the modern mixed economy, which is arguably more Marxist than the USSR and other “Communist” regimes based on Leninism and it's descendants.
Or, put another way, saying its rapidly getting out of hand because you make assumptions about what else could be banned is the slippery slope fallacy. Saying what exactly constitutes unacceptable speech on a given platform just needs to be specifically defined.
And the point I'm making isn't that you would eject all communists and capitalists in practice, it's that you would have to do so in a consistent application of that principle. It's a reductio ad absurdum. You can take anything and find a tenuous connection from there to something terrible, so arguing that we have to ban the anything because allowing it would enable an influx of people connected to the something terrible is ridiculous. Applied as a consistent principle it would require you to ban everything.