Why the first vehicle stopped is immaterial to rather or not the second vehicle can pass. If the first stopped at a controled rail-road croissing it's still legal for a car behind it to come up on the right.
The trick is, that second vehicle then needs to stop. This one didn't, and that's where drama ensues.
However, it's clear that the lanes were obstructed in this case. If they weren't, the car in front of him would have been proceeding forward and he would have had no reason to illegally pass him on the right.
But I've got to give you cred for non-conformity. Everyone else is agreeing that the streets were being obstructed with many saying the protesters got what they deserve for obstructing the roads. You're the only one arguing that the road was unobstructed.
Greatness lies not in being strong, but in the right use of strength - Henry Ward Beecher
Baby sister, I was born game and I intend to go out that way - Rooster Cogburn