Why do I hear so many Socialists arguing that Jesus would have been with them?

When I know that the 10th Commandment is thou shalt not covet thy neighbors goods? They also like to argue that Jesus once said render unto Cesar what is Cesar's, but that doesn't mean that he condoned Cesar taxing them, because if you read the bible, you'll know that he didn't, it just means that he didn't feel that the right way to deal with that problem was by withholding payment. Are you socialists still going to argue?