If you don't provide a cogent counterargument to Karl Popper's paradox of tolerance, I can't take an essay like this seriously. Simply throwing up your hands and saying, "hate exists, let it rain free on the marketplace of ideas" is ... well, not worth a lot.
Also, I love the absence of evidence = evidence of absence argument:
* Germans have stringent anti-hate speech laws * ... yet there are still German extremists!
... and what if the laws were not so stringent?