From Zappa Wiki Jawaka
Sunset Boulevard is a street that runs through Los Angeles for 22 miles. The section that runs through West Hollywood is known as Sunset Strip.
In 1966 and '67, the L.A.P.D. and the Sheriffs Department went to war with the freaks in Hollywood. Every weekend people were rounded up (with no warrants presented or charges stated) as they walked on Sunset Boulevard, forced into Sheriffs buses, driven downtown, held hostage for the evening, then let go -- all because they had LONG HAIR.