Violate the law, subject to self defense. Guy had a gun to his face and was about to watch his dogs get popped, that's criminal behavior on part of the uniform and a disgrace to good cops everywhere. The street goes both ways, there is no separation of classes, all are citizens and all are subject to the same laws. He was trespassing and refused to recognize the law, all while threatening someone with a gun to his face and his dogs. I don't even need to know the rest of the story, there's enough broken laws there to put a non-leo away for 15 - 20, except this time it's a leo. I'm not anti-police, I'm anti-law enforcement personnel, two very different things. Apparently this law enforcement robo figured out that the law applies on both ends of the spectrum the hard way. It's too bad, because it was probably his peers and superiors that instilled this "civilians are the enemy, forget the law, do what you have to do, it's us vs the world" mentality that ended up getting him killed. He could have came back with a warrant, with backup, hell with justification. No need to shoot dogs and draw guns on people, but rambo had to prove a point and affirm his authority per direct orders of superiors.
I'm sorry for the rant, but I'm getting sick of reading stories like this. Families are getting torn apart because of this sh*t, and it's mainly because LAW ENFORCEMENT (not police, don't get it confused, I like police, I heavily dislike jack booted thugs) with this wannabe PMC mentality decided that the law doesn't apply to them and the constitution is irrelevant. They are killing people left and right, and in this instance a cop got killed....all because they decided to separate the classes being "LEO vs Civilian". End rant.
ADD: I actually read the details of the story after going on my rant, apparently the guy with the dogs was still a HUGE scumbag, but this didn't have to end in bloodshed if the letter of the law was followed...this is poor judgement, still a tragedy, but poor judgement. I'm leaving the statements I made above up because in MOST cases, it applies. However in this one, the suspect was truly a scumbag. So the above statement doesn't completely apply to this, but it does however apply to all SWAT personnel or LEOs that prefer black over blue you have ever encountered.