First off, while statistics are useful in combination with the broader picture, throwing statistics as a reason BLM is out to lunch very much is making excuses, because the general point of BLM is to highlight the very real differences in police interactions with white people versus black people. This is borne of both the quantitative and qualitative data on the subject.
Second, the "unlicensed gun" argument is a red herring. The vast majority of firearms in the United States are unlicensed. The United States is a country with ridiculously lax gun laws. It is therefore unreasonable for police to both (1) act like the presence of a gun is at all unusual when interacting with anyone, and (2) immediately resort to deadly force when a black person happens to have any sort of weapon anywhere near them (or, as my last post showed, even when they don't). Compare and contrast: a band of armed yokels take over federal land and buildings in the western United States and sit there POINTING GUNS AT FEDERAL LAW ENFORCEMENT. The only one that ultimately dies is one idiot in a traffic stop. Philandro Castille is pulled over for the umpteenth time for the crime of 'driving while black' and is immediately shot after telling the officer he has a legal firearm in his vehicle.
There are two differences:
1. Federal law enforcement training in tactics and use of force in the US is light-years beyond local-yokel police detachments.
2. The first group were while citizens taking armed political action contrary to the law. The second individual was a black guy going about his business while obeying the law.
This **** is why BLM, even with its minority of over-exuberant members, its radicals, and its plain-bat-****-crazies is still important. There is a systemic bias in law enforcement interactions with minorities, particularly black people, in the United States, one which isn't borne out the same way anywhere else. One of the reasons why BLM is exceedingly vocal is precisely because more passive approaches don't work; US history more than bears that out.