Violent versus Peaceful Religions:
Before His arrest, Jesus told His disciples,
Peace I leave with you, My peace I give to you; not as the world gives do I give to you. Let not your heart be troubled, neither let it be afraid.
When one of Jesus' disciples swung a sword in an attempt to prevent Jesus' arrest,
Jesus said to him,
"Put your sword into its sheath...." (John 18:11)
When Jesus was on trial before Pontius Pilate,
Jesus answered, “My kingdom is not of this world. If My kingdom were of this world, My servants would fight, so that I should not be delivered to the Jews; but now My kingdom is not from here.” (John 18:36)
Jesus' followers are in a spiritual, not physical, battle.
(3) For though we walk in the flesh, we do not war according to the flesh. (4) For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds, (5) casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ,
(2 Corinthians 10:3-5)
Mohammed fought time and again, for example, in the battles of Badr (A.D. 624), Ohod (625), Medina (627), and Mecca (630). (http://www.lbdb.com/TMDisplayLeader.cfm?PID=5444)
Mohammed's followers continue this tradition of carnal warfare:
Jesus also said,
(9) Blessed are the peacemakers, For they shall be called sons of God.
(44) I say to you, love your enemies, bless those who curse you, do good to those who hate you, and pray for those who spitefully use you and persecute you, (45) that you may be sons of your Father in heaven. (Matthew 5:44-45)
(2) The time is coming that whoever kills you will think that he offers God service. (3) And these things they will do to you because they have not known the Father nor Me. (John 16:2-3)