Plus I don't think you really want to make this association. Breivik was a (neo-)Nazi (e.g. [1]). If anything he supports the argument that ideology leads to terrorism (it is baffling to me that anyone would ever think it doesn't). I don't think anyone is making the argument that there is only a single violent ideology on this planet.
But I find it weird that to make your point you'd draw attention to the association between terror and ideologies. Because then you'd very quickly arrive at the obvious question : per ideology, how much terror, and at what point do we take action ? Per ideology, how much terror is something the above graph can help with.
https://www.google.com/trends/explore#q=islam%2C%20terror%2C...
Draw your own conclusion.
Plus I don't think you really want to make this association. Breivik was a (neo-)Nazi (e.g. [1]). If anything he supports the argument that ideology leads to terrorism (it is baffling to me that anyone would ever think it doesn't). I don't think anyone is making the argument that there is only a single violent ideology on this planet.
But I find it weird that to make your point you'd draw attention to the association between terror and ideologies. Because then you'd very quickly arrive at the obvious question : per ideology, how much terror, and at what point do we take action ? Per ideology, how much terror is something the above graph can help with.
[1] http://www.independent.co.uk/news/world/europe/anders-breivi...