Basically they said they didn't want to end up in the middle of anything if the peaceniks decide to burn a flag or anything. They just want to be able to do their jobs. They did express some regret at not being able to honor their fallen comrades with the flag on their gear, but they said being able to do their jobs without interferrence comes first.
I think they ought to sit back and watch Berkeley burn if a peacenik gets out of control with his flag burning.