Odinga's ODM once again wanted supporters to join a demonstration Friday in Uhuru Park, but CNN's Kim Norgaard said a heavy police presence was preventing protesters from making their way to the site.

CNN: Peacemaker Tutu slams Kenya elite

Samantha Rigg-David, the sister of Sean Rigg, a 40-year-old man who died in police custody in 2008 in Brixton, and Alastair Morgan, whose brother Daniel - a private detective - was found with an axe in his head in a south London pub's car park in 1987, took part in the demonstration.

BBC: Protesters call to replace IPCC

At the March 2011 demonstration, there were clashes between police and protesters in Trafalgar Square - hours after a peaceful march to Hyde Park.

BBC: Anti-austerity marches take place

To get into the opening reception of the Futures Industry Association (FIA) at the Art Institute of Chicago, attendees had to walk over an anti-bank demonstration police had closed the main entrance to the museum and restricted access to an elevated walkway from Millennium Park across Monroe Drive where hundreds of protesters had gathered.

FORBES: FIA - Chicago Convergence of "Occupy" Protesters & Regulator