There are many Iraq war protest songs in the Union Songs collection, especially Australian ones! Early in 2003 a CD of these songs called No Blood for Oil was released, if you search http://unionsong.com/ you'll find nearly 30 of them including Peggy Seeger's "Cavemen", Norman Blake's "Don't Be Afraid of the Neo-cons", "Bring 'Em Home" A Pete Seeger song revisited for Iraq

Interestingly CDs like No Blood for Oil were released in Australia and largely ignored while music reporters were writing articles like "where are all the protest songs?". Seems they were scouring the hit parade rather than actually looking!