I thought that McGuinness was driven on his particular path by the desire for independence for Ireland, not a religious crusade.
But religion was/is a useful banner under which you can unite your supporters.
Thus religion becomes a pretence (edit: or even a pretext) for a violent crusade and a target for a violent reaction.
If you want to twist it that way........
The IRA's purpose was independence for Ireland, not converting the Prods to RC.
Quite nearly so. They didn't want to convert the protestants, they wanted to dominate them within a free Ireland.
But the banner under which the "troops" congregated became catholicism or protestantism.
Similarly the conflict in Palestine, it's between muslims and Israelis, but it's not about religion. That's just the banner that unites each side.
Just like all and any previous religious crusades of the past and the present.
Let's not forget that Islam versus christainity is not the only conflict going on in the world. There's conflict over territory in Ukraine, conflict over political control in Myanmar (Burma) where the Budhists are trying to exterminate the muslims. Similar conflict in Laos and Thailand. The conflict in Sri Lanka was over political control but each side was united by religious divide.
Perhaps even Jesus could have been described as a radical.
Probably, sometime in the future the jedi will be fighting to dominate another world.
And so history repeats itself, but we don't need to help it by preaching radicalism.
Perhaps JohnD's comparison was more appropriate and relevant than at first glance.
that's an interesting point. If I murdered someone yesterday, and you murder someone today, am I morally superior to you, , if I fail to learn the lessons of history? (My insertion)