The former states that “As an online discussion grows longer, the probability of a comparison involving Hitler approaches 1”. Also, “there is a tradition in many newsgroups and other Internet discussion forums that once such a comparison is made, the thread is finished and whoever mentioned Hitler has automatically lost whatever debate was in progress”.
Let the following henceforth be known as the PTT diktat:
As soon as someone being accused of bigotry has his SPLC file adduced as evidence, we declare him not guilty on the spot.
(The PTT diktat is agnostic about people who have a long file on the SPLC.)