Does "Jack and the giant bean stalk" teach that it is okay to kill and rob nobles?

The giant is clearly a stand-in for an aristocrat, and Jack breaks into his mansion, murders him, and then steals his money.

What other fairy tales have nefarious morals?
For example, Hänsel and Gretel teaches that you can get away with murdering and robbing old, lonesome women by accusing them of being a witch.