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Explanation: The term "dewastacja" can be used not only in a criminal context, so you might want to add something like "bezprawna". Note that "dewastacja" is used only for property damage.
If the damage is done to people, you coud use "uszkodzenie ciała" or "spowodowanie [ciężkiego] rozstroju zdrowia", the latter being a criminal offence listed in Polish Penal Code.