Really? You go back a thousand years to find something comparable? You have to go back to a brutal age where EVERYONE, the religious and non religious alike, partook in an era of war and expansionism? If anything that's an admission the Muslim mindset is stuck centuries in the past. The interesting thing about groups like the IRA is that their actions were directly contradictory to their religions. Violent people have always twisted religion to their values, rather than allow the guidelines of a religion change them. The unfortunate thing about Islam is the "World vs. Islam" mindset. These protest signs simply are written words of what they speak daily. Even with wacko Christian groups, like the Westboro Baptist church, for every 1 wacko you will find 100 Christians that will reprimand and speak out against the nutjobs. Good luck finding even a 1:1 ratio of Muslims that will critisize other Muslims.