As a raised Catholic (now agnostic) I generally have lived by "Love your neighbour".
However, as someone who's actually lived in the real world, I feel there should be exceptions.
1) If someone is consistently a prick to you and/or others, they should be forced to stop being a prick - in whatever way is necessary.
2) The law needs to bend ins special cases - or have those special cases already outlined for if they arise
3) I believe that if someone breaks into your home, and attempts to rob or harm you, if you kill them in defence, that's fair.
4) If you are assaulted and you injure your attacker to the stage that he can't fight back, he shoudl not be able to sue you.
tl;dr Be nice - but deal harshly with those that try to break the peace, no matter who they are - leaders, protected ethnic groups, whatever. If you're an asshole, you're an asshole. That's it.