“Who do you obey, if you can’t obey all of them simultaneously? “
I’m pretty sure turning around and walking away is the wrong answer.
I'm certainly not saying it was the case here, but I can imagine a situation where one cop yells "hands up" while another shouts "let's see some ID." So the suspect goes for his ID, and gets shot.
Now, a calm and collected person would just freeze, with his hands up. But few people are calm and collected in these situations.