Reasonable people can disagree on the definition of "Nazi", however, which is the real slippery slope, rather than the slope against freedom of association that

Reasonable people can disagree on the definition of "Nazi", however, which is the real slippery slope, rather than the slope against freedom of association that we're all well down already. Want to ban people who identify as Nazis? Fine. Want to ban someone who gets called a Nazi just because they donated money to support legislation banning gay marriage? Ehh...