If he did what is said of him, well, that is indefensible.
I'm not defending him.
But we have this little thingy called a Constitution, and when we start tossing that in the fire every time some cops get pissed off, we don't live in a Constitutional Republic any more.
It becomes mob rule with badges and better weapons than ordinary citizens are allowed to have in many jurisdictions. It is only a short step to outright corruption from there.
Either the law applies, or it doesn't. If those sworn to uphold the law can hold it in obvious contempt, don't be surprised when others who are so inclined ignore it as well.
And people wonder why trust for law enforcement has gone in the toilet.
Which one, the wounded officer or the dead one?
If you were to shoot at a uniformed police officer, what would you expect in return? A bowl of ice cream?
Either the law applies
What part don't you understand about lethal force?