The IOC has taken the step (belated in my mind) of banning international torch relays leading up the Olympics:
Instead of representing a symbol of hope and inspiration, the Olympic torch became a magnet for protesters in 2008 en route to Beijing, sparking sometimes violent protests over China’s human rights record.
The only curiosity is why they didn’t take this step before the Beijing Games. It’s not as though clashes along the torch route were unexpected. London 2012 organizers say they were already planning to keep the relays within the U.K.