Gosh, I don’t know . . . what is an acceptable level of “cops shoot people running away?” In percentage terms, I mean?
Gee, that is why it is a good idea not to run away from them.
And it is a better idea not to attempt to try to cross another nations border.
I would expect the Mexican police to take a dim view of it if I was attempting to cross over to Mexico illegally.
So, the FACT is, the guy was doing something he wasn't suppose to be doing and that is why he got shot-period.