Certain actions are inherently unethical except in certain very rare circumstances.
They are:

Initiation of Physical Force
Attempting to physically damage an individual or the individual's property.
Initiation of Coercive Measures
Threats of physical force and blackmail.
Initiation of Fraud
Lying intentionally to gain advantage.

The non-aggression principle outlined above applies to the majority of situations, but it is not a universal yardstick. There exist situations where the community must rule.

The secondary function of government is to provide for individuals the means to do so.