There is no such thing as a "peaceful" muslim. The quran doesn't allow for it.
Not equal are those of the believers who sit (at home) except those who are disabled (by injury or are blind or lame, etc.), and those who strive hard and fight in the cause of Allah with their wealth and their lives. Allah has preferred in grades those who strive hard and fight with their wealth and their lives above those who sit (at home). Unto each Allah has promised good (Paradise) but Allah preferred those who strive hard and fight above those who sit (at home) by a huge reward."--Quran 4:95
O ye who believe! What is the matter with you, that, when ye are asked to go forth in the cause of Allah, ye cling heavily to the earth? Do ye prefer the life of this world to the Hereafter? But little is the comfort of this life, as compared with the Hereafter. Unless you go forth He will punish you with a grievous penalty and put others in your place." --Quran 9:39
The quran calls anyone who refuses to fight in the name of Allah (jihad) a blasphemer.