Question

John and Mary are neighbors in a residential subdivision. John frequently hosts loud parties that go on late into the night, causing disturbance to Mary and the other residents. Despite numerous complaints from Mary and the subdivision association, John continues his disruptive behavior.

One night, Mary, fed up with the constant noise, decides to take matters into her own hands. She goes to John's house and switches off the main power supply, leaving his party in complete darkness. John is furious and threatens to file a case against Mary for trespassing and interfering with his right to enjoy his property.

Discuss whether Mary's actions of switching off the power supply may be considered as an act contra bonus mores under Articles 19 to 22 of the Civil Code of the Philippines. Provide legal basis for your answer.