Not everyone who considers Deuteronomy to be scripture is Christian. For example, basically any rabbi would disagree with you.
Sure, but this thread is mostly about Christianity (the post is about the Pope and the Catholic Church).
The Deuteronomic code is literally presented as instruction from Moses to Israel as a normative set of rules for israel to follow.
Yes. I said basically this. I wrote: But the thing you quoted from Deuteronomy were instructions to the Israelites.
I don't know of similar commandments in the new testament
Because there aren't any like that.
had its fair share of religious leaders inciting sectarian wars, pogroms, persecution, etc. For example, Pope Paul IV wrote a decree that forced the Jews of Rome into a ghetto in 1555, prevented them from owning property or working most skilled jobs. The Spanish Inquisition primarily targeted Jews and Muslims who converted to Christianity under threat of exile.
And? Your next door neighbour can be a "Christian", go to church every week, etc, but then find out he's a regular thief and had murdered someone. Would you then conclude there must be a commandment somewhere in the Bible that condones stealing and murder? Or would you conclude that he didn't follow the principles of the Bible he proclaimed to believe in?
Examples of people doing bad things in the name of the Bible is not evidence of anything against the Bible. It's just an example of terrible people being manipulative, exploitative, and ultimately evil. Many people throughout history (and many alive today) have realized that many people are more willing to listen to and accept what you say when you claim it's from the Bible. These people don't care about the Bible, they just care that it's a tool they can use for manipulation.