WRONG, the Christians DO NOT go by violence and the Old Testament.  Thats the Jews and the Muslims.  Christians believe in Christ, who came after the Old Testament to which thew New Testament  was written about.  In the New Testament it teaches that the only thing you have to do is love one another as you love yourself.  Sorry you can't blame the Muslim on Muslim violence for the last 1000 years on Christians.  They are killing each other based on each think the other INFIDELS worthy only of death. Do you know of ANY other religion than Islam that exhorts its believers to KILL or CONVERT all others?   Sure you can go back in time and find your misguided Christians BUT, in the here and now, Muslims are running around killing each other AND us, because they are faithfully following the tenets of Islam.  The MAIN tenet being to KILL or convert all infidels. Thats you and me, bub. But go ahead take the blame yourself before you spread it to others.