As the Unite the Kingdom march takes to the streets of the capital for a second time, Zoe Beaty looks at the echoes of the racist National Front marches of the Seventies. And why, until now, there has been a hesitancy to call it what it is I t was September last year when London’s Trafalgar Square first became a stage for Tommy Robinson. “Enough is enough,” crowds chanted. “Stop the invasion,” megaphones blared across the capital. The red and white of St George’s cross was draped over shoulders