That’s the problem when you give to someone a lot of power/authority.First off, apologies to the OP - I seemed to have pulled us off topic with a bit drama...
Secondly, while the exact details of my friends experience aren't really mine to share here, I can assure you, it was a rather mundane issue. The CBSA agent was in an extremely bad mood when we first approached him, and he just kept pounding on my friend. All of the other agents nearby steered clear of our interaction, and occasionally gave us glances of condolences.
The odds are certainly in the favour of an honest person legitimately crossing the border. So, you're right, mine is an extreme example. It's rare. But it does happen.
Who knows, someone might face a Derek Chauvin. I had only good experiences with CBSA, except once, one « officer »(?) checked my passport and my wife’s passport (she’s Canadian) with a loupe, as if my passport was fake...We felt so humiliated. My wife cried a lot. He did that just after landing. Then we (or I might say I) were pulled into secondary. We told to the officer (a CBSA agent ) in charge what happened to us few minutes ago...she was shocked, and she apologised to us. A wonderful agent. So polite and professional, then she let us (I might say she let me) go. She was so embarrassed. I don’t know if it was a racial profiling from the first one, but I promised to myself that I’m going to find him one more time.
I traveled a lot, never felt so humiliated in my whole life. But thanks the last agent was so professional and nice.