On a more serious note, Sufis are generally considered considered more peaceful than other sects of Islam. For the most part this appears to be true but, as with all human endeavours, I have not found this to be the case in all circumstances during my studies. Sufi organizations were key in the early resistance to the French occupation of Algeria. I read that there was even a sort of “Ghost Shirt” rebellion there (Lapidus’ History of Islamic Societies). It sounded very similar to the Sioux religious movement. I also read that a few of the Kuomintang Chinese Generals during the Warlord era and Civil War were Naqshbandi Sufis. And again in Somalia, one of the only organizations to actually take up arms against the Wahhabi al-Shabaab militia has been the Sufi organization Ahlu Sunna Waljama’a (http://en.wikipedia.org/wiki/Ahlu_Sunna_Waljama’a).
The caveat here for me is that certainly in the first and last cases, the use of force could be justified. Any native people are likely to resist an invader, though magic shirts probably aren’t a good tactic for military victory, and al-Shabaab is pretty evil. Any halfway decent person is opposed to stoning and limb amputations, which Ahlu Sunna Waljama’a are.
I believe they were behind the Turkish Janissary as well. I think that it’s a bit narrow to classify them as a ‘sect’ of Islam though (“Sufi chist, Sufi sufist’). They also show up wacked out and weird in the film Jewel of the Nile (Michael Douglas, Danny DeVito).