Foreigners are generally not allowed to own/carry/etc. a firearm in the Philippines, with few exceptions. A spouse that is Filipino can register to own one. https://www.quora.com/What-is-the-law-saying-foreigners-cannot-own-guns-in-the-Philippines https://www.manilatimes.net/one-can-claim-self-defense-only-under-specific-circumstances/161759/ In this case, he would probably have a hard time explaining how he perceived a video camera to be “unlawful aggression.” Although his case might be bolstered if he shows the Judge a photo of them, it could be argued that just letting those cunts walk around in public is unlawful aggression.