One of the advantages of running the economy at “high pressure” – that is, with low unemployment is that some of the more malevolent aspects of human behaviour are suppressed. We know that when the economy goes into a downturn, firms increase their hiring standards because they have the upper hand – lots of workers are unemployed and so the firms can pick and choose more readily. One of the worst aspects of these adjustments is that pure prejudice begins to reveal itself more openly. The most recent data from the US suggests this is the case.