When President Obama stepped into the White House back in 2008, many hoped his mixed heritage would help unite the country, but eight years on America has never appeared more polarised. From Dallas to Nashville Chloe Hadjimatheou retraces a journey she took before Obama’s election across the southern states and stumbles across a gay community under attack, unfettered poverty in trailer parks, the last abortion clinic in Missouri, and meets convicted murderers, to find out why liberal and conservative, black and white, religious and secular Americans harbour so much animosity towards one another. In the weeks before the 2008 US election, the BBC drove a bus coast to coast across the US asking people about their lives and their hopes and fears for the future. In the four-part series, America Revisited, we meet some of those same people again to find out why the country seems more divided than ever.