The Eleven Satanic Rules of the Earth by Anton Szandor LaVey

• Do not give opinions or advice unless you are asked.
• Do not tell your troubles to others unless you are sure they want to hear them.
• When in another’s lair, show him respect or else do not go there.
• If a guest in your lair annoys you, treat him cruelly and without mercy.
• Do not make sexual advances unless you are given the mating signal.
• Do not take that which does not belong to you unless it is a burden to the other person and he cries out to be relieved.
• Acknowledge the power of magic if you have employed it successfully to obtain your desires. If you deny the power of magic after having called upon it with success, you will lose all you have obtained.
• Do not complain about anything to which you need not subject yourself.
• Do not harm little children.
• Do not kill non-human animals unless you are attacked or for your food.
• When walking in open territory, bother no one. If someone bothers you, ask him to stop. If he does not stop, destroy him.

Leftists, even though many are Atheists or Satanists usually break many of these rules. Say what you will about LaVey, These rules are absolutely common sense.