Once I nearly ran into bees which were occupying a tree at the corner. The city removed it within a couple of hours. I believe it was animal control.

This was up in LA. =)

edit:
SD Animal Control wouldn’t have done it..
(http://www.sdcounty.ca.gov/awm/entomology.html#removal%20of%20bees)
“Unfortunately, the County of San Diego CAN NOT remove bees from private property. We DO NOT recommend that you attempt to remove bees yourself.”