Throwing footwear on famous personalities by sullen people is becoming increasingly common as a gesture of protest. The latest to be targeted was Arvind Kejriwal, a close associate of Anna Hazare.
http://ummid.com/news/2011/October/18.10.2011/thrwoing_footwear.htm
http://ummid.com/news/2011/October/18.10.2011/thrwoing_footwear.htm