04/27/2009 05:12 am ET Updated May 25, 2011

G20 Protests: London Protesters Threaten Bankers, Evoke Executions

Mark Barrett, a professional tour guide, spent last Saturday painting Barack Obama's election catchphrase "yes we can" on a banner that protesters will carry as they try to occupy London's financial district April 1.

Barrett is helping organize a protest outside the Bank of England, one of several called to express anger against banks and bankers and mark the arrival in London of leaders of the Group of 20 nations -- including Obama, now president.