Sounds a lot like muslim terrorists.
Oddly enough, fanatics have a very different mindset. They are often savagely extreme precisely because they doubt their own beliefs.
In the case of modern Muslims, they are caught up in the “civilization supremacy” complex.
This is that when civilization and barbarity co-exist, civilization usually wins by default, because even the uneducated can tell that it is better than barbarism. So the only recourse barbarians have is to utterly destroy civilization. They have to force their kind to remain barbarians, or “they will vote with their feet.”
In its beginnings, Islam was much superior to the primitive tribalism that surrounded it. This gave Muslims a lot of chutzpah, because they were confident that theirs was a better way. However, in the 11th and 12th Centuries, they had a philosophical shift to fundamentalism. That is, that all useful knowledge was contained within the Koran, and any other knowledge was corrupting. That killed their intellectual advance.
Yet even today, many Muslims are still convinced that what are now obviously barbaric practices are more civilized than those practiced in civilized lands. Treating women like farm animals, for example.
But the hypocrisy of this nonsense is obvious to even the dullest among them, which severely rattles their confidence. And doubting their faith, they embrace fanatical practices to defend it.
A good example just today, was of an effort to vandalize and destroy a UN summer camp for children in Gaza: “Islamic extremists have accused the main U.N. aid agency of corrupting Gaza’s youth with its summer program of games, sports and human rights lessons for some 250,000 children.”
Because such things are not in the Koran, they must be destroyed.
In any event, this is unlike socialists, whose behavior is far more like that of brain damaged people.