One only needs to look at the day it's planned and scratch his or her head: May Day.
Apparently the muslims are siding with the open border crowd as well.
http://www.freerepublic.com/focus/f-news/1619757/posts
I remember a May Day demonstration by Zengakuran Communist "students" in Yokohama in the mid 1950s. They flipped over my dad's Packard and set it on fire in front of our house.