What is it?

This is how a BBC reporter describes it:

     Imagine the worst, most foul thing you have ever smelled. An 
overpowering mix of rotting meat, old socks that haven't been washed for 
weeks -- topped off with the pungent waft of an open sewer.

     Imagine being covered in the stuff as it is liberally sprayed from a 
water cannon.

     Then imagine not being able to get rid of the stench for at least 
three days, no matter how often you try to scrub yourself clean."

Hell, that's how our left wing demonstators smell on a good day. For them 
it would be like taking a shower.

POINTER: 
http://neoconexpress.blogspot.com/2008/10/israels-new-potent-crowd-control-weapon.html#links