I've had a gun pulled on me twice for traffic stops when I went to grab something. I'm white.
Relevant fictional quote:
There's a reason you separate military and the police. One fights the enemies of the state, the other serves and protects the people. When the military becomes both, then the enemies of the state tend to become the people. - William Adama
Something I learned from a friend is to ask permission for every movement or at the very least narrate and move slowly.
"I'm going to reach in the glovebox for my registration. Is that ok?"
I think it's the only way to protect yourself from their hyper-nervousness.
Edit: friend and I are also white.
The reality is there are aggressive people in society that have a tendency to escalate things. If police are trained to only de-escalate, it removes a powerful check on aggressive escalation.
The second order effect is an increase in events like people being pushed onto train tracks, glass bottles being thrown if you glance the wrong direction, etc.
I think optimally you have a police force that is trained in de-escalation but also escalates things slightly more than the average citizen and thereby provides a service to society as a buffer.