Would you agree that we could construct a continuum that ranges from "violence with no discernible religious component" to "violence clearly motivated by religion"?
To some extent you can identify violence that has an ideological component [of which religion would be included], and violence of a more 'traditional' nature.
Humans have a tradition of romantic/utopian violence, whereby 'redemptive' violence can be used to 'progress' society. Modern Jihadism, the Musnster Anabaptists, left wing urban guerrillas, fascists, etc. would fit into this paradigm.
In these case, the ideological component is essential to the violence which would not make sense without it. Such movement seem to appear out of certain social conditions though. The ideology arises or gains popularity due to the conditions, then motivates behaviour. Certain conditions seem to facilitate extremism of one form of the other, so looking solely at the ideology as the 'cause' is not very useful. (couple of great books: N Cohn - The pursuit of the millennium, William Pfaff - The bullet's song)
On a larger scale, ideological violence is rarer, but neocons, the Crusades, Naziism could fit into a similar scheme. The problem at a larger scale though is that it can be hard to distinguish between ideological violence and 'traditional' violence. Few people look at the Iraq invasion as being an ideological war, preferring power, oil etc as explanations despite a pretty strong case for ideology as being a/the core component.
With the Arab conquest of India, for example, it is almost impossible to distinguish this from traditional conquering as nothing happened that didn't also happen in 'traditional' wars. As such it is pretty meaningless, if not incorrect, to label it ideological. How does it differ from the Mongols, Romans, Alexander, etc.?
Pre-modern violence is particularly hard to demonstrate as ideological/religious in nature with perhaps a handful of exceptions. Remember pious narratives were often post hoc rationalisations for plain old violence, and all societies were violent- especially the powerful ones.
What are your arguments about why monotheistic religions should be singled out as being especially violent compared to a baseline of all human history, rather than a baseline of zero?
[btw can you use the reply function please? Just makes it easier to find posts in longer threads with multiple discussions
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