I've heard a few local stories also from Shoreline of ICE goons backing down under the simplest of resistance... just recording them and telling them to stop.
Rapid response protests don't work 100% of the time but they do work SOME of the time.
The real challenge of melting ICE in the region isn't one of politicians, cops or even veteran activists saving us... it's a question of whether we can ALL build communities that are willing to materially support their neighbors.