I think almost everyone here is familiar with the paradox of tolerance as a general concept, but it is almost misunderstood or misused.
To quote your own Wikipedia link, here's what Karl Popper (who coined this phrase) believed:
> "Popper asserted that to allow freedom of speech to those who would use it to eliminate the very principle upon which they rely is paradoxical."
And yet here we are, with people today using freedom of speech to suppress freedom of speech (e.g. pressuring companies to deplatform someone) and somehow thinking they are defending tolerance.
Also if you actually read more about Popper said, you'll find this bit:
> I do not imply, for instance, that we should always suppress the utterance of intolerant philosophies; as long as we can counter them by rational argument and keep them in check by public opinion, suppression would certainly be unwise.