The Desert Fathers teach us that fighting fire with fire is not always the best strategy when faced with harm:
"It was said of Abba John the Persian that when some evildoers came to
him, he took a basin and wanted to wash their feet. But they
with confusion, and began to do penance"
( From this online collection of sayings of the Desert Fathers: http://www29.homepage.villanova.edu/christopher.haas/saying%20of%20the%20desert%20fathers.html )