A
ha ha only serious term used to describe
Berkeley,
California. The area is perceived to be ruled over by many
left wing crazies who promote an extremely
liberal agenda. Add in the presence of the usually very left leaning
UCB, and you have a perfect target for
radio talk show wrath.
It should be noted that like the term geek and nerd, "People's Republic of Berkeley" is used in both a positive and negative context.