So I’m supposed to love Hitler?
He did a pick and choose through the chapter in Romans. For instance...
9 Let love be without dissimulation. Abhor that which is evil; cleave to that which is good.
As well as...
18 If it be possible, as much as lieth in you, live peaceably with all men.
Sometimes you just can't live peaceably with all men.
The book of Romans (letters of support actually) was also directed, overall, towards the people who were already Christians in Rome (Romans 1:7 To all that be in Rome, beloved of God, called to be saints: Grace to you and peace from God our Father, and the Lord Jesus Christ.) and how they should interact with those who were within that congregation to prevent discord.