Jesus makes the Old Testament old hat?

[The Valkyrie]

In the very first book of the New Testament Jesus says this:

"17 “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. 18 For truly I tell you, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished. 19 Therefore anyone who sets aside one of the least of these commands and teaches others accordingly will be called least in the kingdom of heaven, but whoever practices and teaches these commands will be called great in the kingdom of heaven. 20 For I tell you that unless your righteousness surpasses that of the Pharisees and the teachers of the law, you will certainly not enter the kingdom of heaven."

I didn't see where he abolishes all the barbarism. Maybe it's my poor ability to contort a believable alternative interpretation, but he seems to be endorsing all the crazy shit from the first part of the book.

I'm always amused by religious nuts who claim that Jesus overrides the OT, while ignoring the passages above and then insist on holding to the 10 commandments