How would this even work? I google for local "immigration lawyers"(??) and tell the person who answers a man whose name I don't know yelled at me to call them, and that they get someone down to the airport? I'd like to think if I saw this happening I'd step in to help, but I don't feel like I would have enough compelling --- let alone actionable --- information for a lawyer to be interested enough to intervene.

Here's how I would handle it:

In addition to calling several high profile agencies like ACLU and EFF, I would call one or two local lawyers and say,

"Hi, my name is FirstLast, at 2:05 PM I was at LAX Terminal 2. A man wearing XYZ was being led away by CBP agents and was pleading for someone to call a lawyer. Is this something you can handle? I imagine you can get in contact with LAX authorities if you are interested in taking this case."

I guess it's different at the federal level because they can detain people longer and with less cause, but eventually I believe they have to be offered the right to legal representation and being hauled in front of a judge publically.

Unless of course the US Govt wants to extradite you from LAX to Guantanamo, at which point a lawyer is the least of your worries.

I would call the ACLU or EFF and describe the situation. Nobody would even notice.

Interesting approach. How often has it worked?

Pretty well since the private and public persons annoying me typically go back into their hiding hole with my uncommon way of talking

Ive never made it to the nightly news with a video of me shouting that line

Or on a talk show about the lawsuit for that recorder to get their share of a settlement

So not sure why to tell you