The anti-war demonstrations in the UK were the biggest ever seen, and yet we went into Iraq. What protests are ever "effective"? They're a warning to those in

The anti-war demonstrations in the UK were the biggest ever seen, and yet we went into Iraq. What protests are ever "effective"? They're a warning to those in power more than anything else. Usually the repercussions for politicians are felt years afterwards, for example Labour losing elections and Tony Blair being unable to participate effectively in UK politics any more.