It isn't wise to have a security camera if it contradicts your story to police about shooting at people. This guy will likely get off easy, only because he missed.
If i had a security system with a camera, I would want to have the ability to erase any video that I did not want to have around. A system that backs up to the cloud that does not give the system owner the right to permanently delete all copies is problematic.
Once there is a court order, that’s another kettle of fish. But unless there is a court order, the system owner should be able to delete anything he damn well pleases.