Then and now
by mercuriuspoliticus
Students protesting in Parliament Square in December 2010:
Apprentices protesting in Parliament Square in December 1641:
From All the memorable & wonder-strikinge, Parlamentary mercies effected & afforded unto this our English nation, within this space of lesse then 2 yeares past an0. 1641. & 1642 (London, 1642).
Mercurius Politicus 
Brilliantly apt. What was the 17th Century equivalent of a fire extinguisher?