First of all, think of your safety before the videos. Try and not handle such situations in isolated spaces or alone. Move to a place where others are present, preferably have a friend around.
If the encounter is with a public official who isn't a police officer, just walk away and leave. If it's the police, we recommend complying if they request you to delete the video recording. You can use different automatic backup methods to make sure the deleted videos are not really deleted even though it may appear so for the officer.