BERKELEY — University officials say people living and sleeping in the wide street median outside the UC Berkeley tree-sit are creating a messy, dangerous and noisy situation with their tents, litter and drumming circles. But the people in the tents — who act as ground support for a handful of people still living in a university oak grove — say their small encampment is there to protect the grove, help those still perched in the trees and keep a watchful eye on university police, with whom they've sparred in the past. "It's dangerous. We are getting complaints from people who...