A supporter holds a sign as Republican US presidential candidate Donald Trump was speaking at a campaign rally at Living History Farms in Urbandale, Iowa on January 15, 2016. Scott Morgan / Reuters
A supporter holds a sign as Republican US presidential candidate Donald Trump was speaking at a campaign rally at Living History Farms in Urbandale, Iowa on January 15, 2016. Scott Morgan / Reuters
Baffled observers have been asking, how could voters who supported Democrat Barack Obama turn to the most explicitly racist candidate in modern US history? Taimur Khan explains