>>212036571They don't need to. It's kind of a slurry of laws and policy.
1. The exterior is public, and you can record people in public.
2. The house is someone's property, They only need the home owner's permission to film inside, which they got.
3. Dateline is considered "News" and not "Entertainment" and are not required to go through the same processes "entertainment" shows do.
4. If these guys actually go to court, the video is considered public record for evidence.