That's the paradox of tolerance for you; we must be intolerant of those that are intolerant... but you probably already know that Karl Popper theorized that [0]. Just looking around globally, we seem to be at that inflection point where this isn't mere hypothesis, but theory or law:
"Popper posited that if intolerant ideologies are allowed unchecked expression, they could exploit open society values to erode or destroy tolerance itself through authoritarian or oppressive practices."
That's not a paradox of tolerance, it is the anti-democratic practice of fascism.
> they could exploit open society values to erode or destroy tolerance itself through authoritarian or oppressive practices.
This is exactly my point: an emerging fascist government through authoritarian or oppressive practices destroys tolerance by silencing people for any words that go against their agenda. There is no paradox here.
"Popper posited that if intolerant ideologies are allowed unchecked expression, they could exploit open society values to erode or destroy tolerance itself through authoritarian or oppressive practices."
[0]: https://en.wikipedia.org/wiki/Paradox_of_tolerance