Unpossible! Hollywood gives bad advice in self defense scenarios!

Fiction isn't fact? Say it ain't so.

When the heroic defense attorney busts into the interrogation room,
forcing the cops to stop questioning the suspect (who under ideal
circumstances might assert self defense), it's not how it works in real
life! Who knew you can't get proper legal advice from idiot screenwriters?

https://www.youtube.com/watch?v=_UKwxM_jU_A

Next, someone will claim that defense attorneys on cop shows know
absolutely nothing about defending their clients rights.