This is my favorite Psalm, along with the phrase that they will come against you one way and go away fleeing seven.
I pray for the Pres. daily and pray Romans that the state does not bear the sword in vain but to EXECUTE WRATH. (not even to "bring justice," but, as I translate that, to "kick butt"!)
Yes. Roman's 13 is a great chapter - especially verse 4 that you refer to.