Right, except what the 'laws of Moses' consist of can be interpreted many different ways. Some say it's everything in the old testament, my parents believe that only applies to the cultural rules of the day.
Listen, I am not claiming all christians should be slaughtering people. I am simply pointing out that where these extremist use the koran to justify their actions, extremist christians do the same. It may not happen as often right now in this country, but it does happen, has happened and will happen again most likely.
I would also point out that the notion that the god of the old testament thought it was okay to slaughter people, but then changed his mind when his son was on the planet, strikes a discordant tone with me and is one of the reasons I first started rejecting the bible as a youth. Since then there have been dozens of other reasons, but that was one of the first, and I still feel one of the best examples of hypocrisy in the book. If god knows everything and is this loving, caring being, then why didn't he stand up against slavery? Why did he order his people to commit genocide? You say it was a different time and I say, how does that matter to an all knowing god who lives forever?