Is it Ok to plunder for staples? If so, when?

(Plunder and staples is a english vocabulary words)

Is most cultures, theft is seen as a bad thing and there's basically no way to relativize this. Specially without any context. In the free world and even in many dictatorships, taking something that is not yours is an action that faces punishment of some kind.

Even if the object stolen is of little to no value, it is still morally wrong.