Marching for peace wouldn't be an ideology. As Migeru said, there could be all kinds of reasons for going on a march.
And Martin Kramer - a prominent neo-con with a jihadist mentality probably isn't be the best way to debunk Pape.
I like Pape's take on things. I don't know if he's right or not, but his ideas make much more sense to me than neocon jihadist clash-of-civilisation fantasies do.