imported post
I think the cops are in sort of a catch-22 situation. If it was a domestic violence call, and they don't check it out, they will get a heap of complaining later if he had her tied up (or worse) in the house. The guy was awfully combative, which is understandable, but not a good idea.
The flip side is that the officer did enter the home without permission, with only the phone call to 911 dispatch as his "probable cause." He didn't even seem that clear that the call was a domestic violence call. It could have been anything, as far as I could tell. That seems pretty risky to me, from a legality perspective.
The presence of the camera definitely makes me wonder if it was a setup. I think people need to be much more aware of both their rights in these situations (aside from being combative, I think the guy was pretty clear that the officers weren't welcome in his home), and more watchful for violations.