That's some great imagery.
Peregrines are strongly territorial around their nesting sites and those bridges look like ideal nesting sites for them.
It looks like they were warning you off rather than attacking, but they can be very convincing...
I doubt there's another country in the civilised world where the term mainstream media is used as a pejorative.
Whenever you see that term being used disparagingly, you can tell a lot about the person using it.