Question about self defense and plain clothes "officers".

So we are seeing more and more videos plain clothed ICE agents abducting people and throwing them in vans etc.

Now, warning are coming out (in this sub even) about watching out for criminals pretending to be ICE to do random bad shit.

So hypothetically speaking (I know noneya are lawyers), If one was a legal concealed carry citizen just minding his own business. And you see a bunch of dudes in plain clothes, with no badges or IDs, jumping out and grabbing someone that is then screaming for help. Why would it then be illegal to intercede in what is clearly an illegal kidnapping until someone proves otherwise. For that matter, if the same guys are coming after YOU?

I am just shocked one of these assholes hasn't gotten shot yet. They are clearly poorly trained and obviously have shitty attitudes and just plan DGAF about rules and laws.

Why WOULDN'T it be justifiable to use deadly force to prevent yourself from being kidnapped by masked men rushing at you and trying to push you into a van?