“ The paradox of tolerance states that if a society is tolerant without limit, its ability to be tolerant is eventually seized or destroyed by the intolerant.”
>>freen+cJ
Lesser known is Popper's meta-paradox which is that Popper's paradox is often quoted by people attempting to justify their own intolerance, the same sort of people that Popper's paradox tells us cannot be safely tolerated by a society.