US election 2016: Divided nation split into “alien tribes”
22 February 2016 Last updated at 09:35 GMT
Polls in the US show that voters are angry at the Washington establishment and that American society is as divided as never before.
With candidates preparing for further primaries and caucuses, the BBC will be travelling through the Deep South talking to voters.
In this report the BBC”s Franz Strasser looks at the demographic trends that make the US so divided.