I am a Christian with Muslim friends and get upset with some of the polemics exhibited in many places including here, but it is very important that Muslims be presented with Jesus and the Gospel. The signs (unintentionally) provide a great starting point for discussion with Muslims about the Gospel.
Muslims believe Jesus was a virgin-born prophet, sent by God, performed miracles, and was the ONLY(!) sinless man that ever lived. Muslims should be encouraged to study his life and the New Testament. A great recent book on a Muslim who came to Christ is “Seeking Allah, Finding Jesus,” by Qureshi. It’s a great read with apologetics from a unique viewpoint, especially if you want to share the Gospel with your Muslim neighbors, friends and co-workers..
Islam is a war plan.