Tickling is the act of touching a part of the body so as to cause involuntary twitching movements and/or laughter.  Frank La Rue and Dan Froomkin argue in this HuffPost article that American law enforcement should not use force of any kind when interacting with OWS protestors.  Why?  These guys are not joking.  Why is the far-Left making this argument?  These guys are serious Leftists, taken very seriously on the Left.  Friends, think like a Leftist.  For OWS to work, moderate voters in American must be fooled into seeing the OWS protesters as victims caught in an unfair confrontation.  The far-Left must confuse moderate voters into thinking that using anything other than tickling is considered cracking-down.  Using anything like pepper-spray or handcuffs violates these OWS protestor's human and constitutional rights.  These big-time leftists are serious in their design of this confrontation between OWS and the police.  Think like a Leftist.  Noting Leftists do to create fake confrontations is an accident because Leftists are not victims.  Leftists are ruthless.  When dealing with sneaky Leftists, always ask why?  For example, the Chicago Tribune offers a glimpse into progressive strategy to fool moderate voters.  Look for Leftists to begin a drumbeat of toxic conservative political rhetoric and right-wing obsessions.  Specific elected Republican freshmen in Congress will be baited and portrayed as obsessed with birtherism.  The objective is to fool moderate voters that lazy, elected Republicans are largely responsible for America's toxic politics and caustic tone.  What normal moderate voter would want to associate with these far-right crazies?  If you are loony, vote Republican.  If you are a smart and moderate, vote Democrat.  Leftism is that simple.
Read Frank and Dan's full argument here: http://www.huffingtonpost.com/2011/12/02/occupy-wall-street-un-envoy_n_1125860.html