They blocked the Golden Gate Bridge which included ambulances, other emergency vehicles and thousands of people trying to get to work. I'm happy that the DA is throwing the book at them, I hope they bankrupt themselves trying to defend themselves and then spend a lot of time in jail.

While politically i'm on the opposite side of those guys, i do think that such severe prosecution is unwarranted and politically motivated (and may be intended to create chilling effect on all future protests no matter the cause) - blocking a road is a well established traditional form of protest which traditionally is expected to end with (if the judge is in a bad mood) something like disorderly conduct citation/fine, not anywhere close to felony.