My own experience has taught me, that the neo-nazi followers, can be a physically violent people.  They are also smart enough to know, that hate crimes, mixed with murders, will get them an extremely long incarceration sentence.

Whereas, in the Quran, infidels should be killed, if they don't convert to Islam.  Infidels should never question, the teachings of the Quran.  Martyrs go to heaven, and have sex with 72 virgins.

I see these 2 ideologies, as possessing similar violent tendencies.