I think a few things about that statement:
1)Few people, especially religious ones even know what is right and wrong, or sin.
2)Certain Christians in particular can't obey their professed savior's very plain commands like love your neighbor, and even love your ENEMY. How can you call yourself a Christian when you don't even believe what he said? "But I tell you: Love your enemies and pray for those who persecute you" Now not only do these people hate you and call it love (and project it on GOD) but they are the ones doing the persecuting.
3)if you spend your time obsessing about other's "sins" you are again ignoring YOUR savior's advice .. "You hypocrite, first take the plank out of your own eye, and then you will see clearly to remove the speck from your brother's eye." notice the comparison with the plank in the accusers eye to the "speck" in the accused's eye.
4)You can get into rules and interpretations of them all you want, but anyone with sense can read the words of "Jesus" in the Christian bible and see that he was, a pacifist (do not take up the sword, turn the other cheek), did not approve of the self righteous religious leaders of his day, and said that his kingdom was not of this world (i.e. governments and politics). In a nutshell the organizations that want to bothered with other people's sins and use politics and government to enforce their views are all disqualifying themselves as followers of "Jesus."
5)read the reference in iscottosx's posting if you are caught up in rules of righteousness.
6)You can hate many things .. broccoli, cottage cheese, pink underwear .. why should I give a crap if you hate me? frankly I would rather know if you hate me so I can watch my back when you are around.
I could say more, but I think you can get the idea of what I think of the religious (self) right(eousness)