> However if you don't, it's obvious they will drag you out of your car and beat you, take your keys, maybe plant some drugs or a gun because you got all uppity, and lie about it all later

Here we go again with that troubling word at HN: “obvious.” Best to strike that from your vocabulary; things you might think as obvious both rarely are so, and often much more complicated than you think.

What you’re describing is a situation that does sometimes happen in the worst cases, but by no means is it normal or frequent relative to the number of ordinary police encounters every day. These episodes make the news because they are out of the ordinary (“newsworthy”). If they happened at every stop, they wouldn’t be reported in the news.

Do these things happen? Sure, and they are awful. But they are by no means standard procedure and they are unlikely to happen to you. And if it does, lawyer up right away.