Wiki - The paradox of tolerance states that if a society is tolerant without limit, its ability to be tolerant is eventually ceased or destroyed by the intolerant. Karl Popper described it as the seemingly self-contradictory idea that in order to maintain a tolerant society, the society must retain the right to be intolerant of intolerance.
Its not a paradox.
Tolerance is a social contract.
If you refuse to be part of the social contract, then you do not receive its protection.
it is not paradoxical to be intolerant to those who want to destroy the contract to harm individuals or society. Being violently intolerant against them is nothing but acting in the defense of our own personhood, the personhood of our fellows, and the good of our society.