There are an infinite number of bad ideas in the world. No-one’s life would be improved by hearing them all.
Your right to drive is unimpaired, but the privilege of driving that you enjoy most definitely is.
Most movements to expand rights to new groups are opposed by those who would thereby experience a diminution of their privelege (which is always relative).
This is also why you have the wealthy so often opposing policies that will create more wealth for everyone including themselves, because those same policies reduce their relative advantages.
I'd love you to show me that there is a repeatable and measurable experiment that determines that as a fundamental function of the universe, people should have equal rights.
Personally, I don't believe that (the fact it's a universal truth) to be true, morals and ethics are a subjective topic and stuff like "everyone should have equal right" is something that most people including me can agree on fairly easily. Other people might not agree.
Looking at that line of thinking it's ridiculous, there are assumptions and a gross misunderstanding of correlation and causation and confounding factors. But if you are not educated enough to see the problems in those arguments (which I think would be a higher level of education required than believing in flat earth) or if you are a little bit inclined to let someone walk you down a "logical" path of fallacies then it's easy to make that leap. And that's an easy argument for a white nationalist to make. It's a lot less easy for someone to refute it.
> But is one’s life diminished by hearing bad
> ideas? I don’t think so
Let's say I publish an article alleging you murdered your previous girlfriend/boyfriend. It goes viral. A month later, the truth airs! Someone publishes a follow-up explaining that you are innocent. Do you think your life will just go back to normal?
If the bad idea was that you and your family should be killed or forcibly expelled from your jobs and homes, and you heard it discussed seriously and frequently by your neighbors, police officers, and elected officials--yeah, I think that might diminish your quality of life in some ways.
Look at anti-vaxxers. A small group of hysterical "do-gooders" educated by bad ideas are doing a lot of harm and if it's up to them would reverse the arguably greatest achievement in medical history.
Kids actually get killed thanks to the efforts of those assholes.
And secondly, when the masses weary of arguing nonsense ideas, there is a danger of them becoming acceptable. If we all stop arguing when the trolls repeat yet again that jews/immigrants/women/gays are sub-human and should be removed, some people will take that silence as assent and the violence begins.
So what we need is some kind of snopes for ideas, where our brightest and best could weigh good and bad ideas, and the rest of us could just point to their results. But wait - that's what a university* is! And it's no coincidence that the trolls direct their fiercest fury at academics.
*Trump University excepted.