Experts say there are a number of driving forces behind far-right, anti-immigration mobilisation in the UK and Australia in recent months but the rallies themselves are "not particularly exceptional". More than 100,000 anti-immigration protesters marched through the streets of central London on Saturday under the banner of 'Unite the Kingdom' in one of the country's largest ever far-right demonstrations. The marches, organised by the anti-immigration, anti-Islam activist Stephen Yaxley-Lennon — known as Tommy Robinson — brought highly charged scenes and police officers described being physically assaulted and hit by flying projectiles. Saturday's rally in London was organised by far-right activist...