History is the record of human progress, a record of the struggle of the advancement of the human mind, of the human spirit, towards some known or unknown objective.
Progressives and Islamists are indeed on the same side. Their common disdain for Christianity explains why left-wing judges in America find any inkling of Christianity in the public square unconstitutional, while Islamist judges in the Middle East deem it executable. Their common view that life is expendable explains the left's embrace abortion-on-demand and why the Islamists don't hesitate to deploy their own children for homicide bombings.