There is ideology that is immune from perversion, manipulation, and other forms of hijacking
Without offering an example? That's an easy cop-out.
That was supposed to read, "there is no ideology that is immune . . . "
Sorry for the typo.
As for Ideology being immune - I doubt it. Even at its simplest level (an idea) there is still interpretation, let alone at the systematic idea level (ideology).
Yes, that's what I said: no ideology is immune from perversion by misinterpretation. So you can no more blame religion as you can science or any other culture for the (mis)interpretations of the culture that lead to outcomes you wish to criticize.
For example, there is the idea of God. But what does God entail, as an idea? If you wrote the characteristics of God side by side between Christianity and Islam - you would have to come to the conclusion that they were two different Gods. So even here, at the very base level, it can't be agreed upon.
Or you might find that there is a way of understanding both religions by which they align and appear as they are, as different depictions of the same universal divinity.
But that is a different issue. The issue I was responding to was whether religion can be blamed for violence or any other acts committed by religious people and the answer is no, just as science can't be blamed for any terrorism or other acts committed by believers in science.
Ideology and culture are simply not determinate when it comes to the actions of human beings. They may be influential insofar as human beings study and interpret ideas in various ways that help them discover their own ideas, motivations, and intent; but ultimately the actions they commit are generated by the interaction and not by the ideologies they interact with.
It is the same as the fact that guns don't kill people, though a person can kill another person with a gun. The same person could kill with a knife, blunt object, poison, a motor-vehicle, or other potential weapon; so you can't blame guns for killings even if shooting may be a popular tool for murder, war, etc.
Like guns, religion may be a popular motivation/justification for certain acts of violence/terrorism, but that doesn't mean those acts would have been less likely to occur in a world devoid of religion. Science, nationalism, populism, and/or other cultural ideologies would be cited as reasons for the same quantity of violence in the absence of religion because ultimately people who commit violence do so as an act of faith whether their faith is in science, the importance of politics/faction/nation, their personal honor/dignity, or whatever reason they have to fight.