Are you saying he should not have been threatening someone with it if it's true that he was threatening someone with it or are you saying that he definitely was not threatening someone with it if it's true that he had it?
I'll respond as if you said the latter, since that's what so many are missing:
The police were there specifically because someone called and said that the man threatened them with a gun.
If you have a gun and you don't cooperate with a lawful demand from the police then you ARE threatening them with a gun.
This guy didn't even have a gun yet. You don't think the police took it as a threat when he went for their weapon? He's lucky he didn't get shot. It would have been entirely justified. If you try to argue how different they are, it only becomes worse for Alton's case:
They also tried tazing Alton and it didn't work (he remained standing). The officers here were able to keep this man from getting a gun but in Alton's case he already had a gun and they were not able to subdue him well enough (his arm was still free to reach for the gun in his pocket).
Well, that an assumption too. A much more likely assumption, but an assumption, none the less. It's very possible that the officer changed his request after being informed of the gun and Philando reached anyway. We don't have/see that part yet. Still tragic either way. Is there any dash cam footage expected?