Given that neo-Nazi marches have more attendants in Germany than they do in US, I would question the assertion that it actually does anything to prevent the Nazis from coming to power.
The "paradox of tolerance" is not a paradox at all when one contemplates the difference between speech and action. Tolerating intolerant speech, no matter how extreme, is not a problem. Tolerating intolerant actions is where tolerance breaks down.
Dude, you recently had a right wing mob storm your parliament in an attempt to overthrow a democratic election in favor of a leader with clear fascist tendencies. Come on.
The "paradox of tolerance" is not a paradox at all when one contemplates the difference between speech and action. Tolerating intolerant speech, no matter how extreme, is not a problem. Tolerating intolerant actions is where tolerance breaks down.