In the real world, if caught, those who spied on Americans and leaked intelligence could be prosecuted, and if convicted, could do prison time.
As for that Trump rally in FL, I wouldn't be surprised if there are attendees who are prepared for Hate-Trumpers to try to copy-cat what was done in Berserkeley. Thing is, not many FL PDs are "led" like BPD and UCBPD. And the element of surprise is a one-time thing. After that, targets may become ambushers (even in SF and Berserkeley!).