The paradox of tolerance has best been explained to me not as a paradox, but as a social contract. In the contract, all parties respect eachother as they are, but when intolerance enters and the contract is broken, you are no longer bound by the contract, therefore you are now allowed to be intolerant back. Im a conditional pacifist, in the event of me being attacked i will defend myself to the best of my abilities and to whatever force is justified.