Activists plan 'major action' targeting the Olympics

The Olympic Stadium. Credit: Reuters, Eddie Keogh

Soaring costs, debt, pollution and repression - just some of the criticisms levied at London 2012 by a group of anti-Olympic protesters.

Today, activists gathered to plan what they're calling 'major action' targeting the games, raising yet more fears over the event's security.

Liz Wickham reports.