I was doing some "algorithm surfing" (i.e. VPN+private tab+click enough youtube videos on a topic=temporarily immersed in someone else's rabbit hole). In a patriotism rabbit hole, I found this video about a fearless teenager defending himself and his father against police misconduct with knowledge of Utah law.

Question: how can a layperson possibly know that much about the law to rival a cop's situational power like that?

I'm already familiar with shutting up (I vaguely remember there being a way funnier video but I can't find it)

but I think not shutting up, and instead sheer CYA, was instrumental to that kid and his dad winning the counterlawsuit. And being friendly has turned a speeding ticket into a warning for me (anecdotal evidence)... once...

Apologies if this question is too American. Also please don't hit me with another All Cops Are Benzene or something -- I could use a usable answer ^ .^