They reported that he threatened his girlfriend. The girlfriend says that never happened and he only threatened himself.

Maybe he did threaten her, maybe he didn't. We have a he said, she said thing going on here. No factual or useful info, really.

they reported that they shot him when he lunged for the police (yet all of the blood splatter is contained on the mattress as if he was laying there). So, which is it? Did he lunge or just not drop the knife?

This is just based on what the untrained, uneducated family is saying. Really? You're going to consider what someone completely ignorant in forensic science and crime scene investigation has to say about blood "splatter." They can't even use proper vocabulary (the correct term is spatter without any "l,") but yeah, their analysis must mean something important. I'm sorry, but what the family says about the location of the blood means virtually nothing to me. Maybe he was near the bed when they shot him. Maybe he was in the process of rapidly getting up. It's a small, enclosed area, so it's not like the deputies have a lot of time to react if the guy did make a threatening movement.

So, essentially, we know zero factual information other than the fact that the police responded to a suicidal, possibly armed man who they ended up shooting and killing. That's all we know. I can't speak for everyone, but all I am saying is that we cannot make an accurate, informed opinion on the legality of this shooting based on the information we have. Maybe you guys are right. Maybe it was unjustified. Perhaps there are better ways to deal with these situations and maybe better or different training should be implemented. But it's also possible that this shooting was completely justified and the deputies made a quick decision that ended up being right. Tragic, but right.

We don't know. So let's not pretend that we do. There are plenty situations where law enforcement screws up, and I'll be the first to admit it. However, I can't do that with the information that has been released.