Race " review
Hampstead theatre, LondonDavid Mamet reminds me of some veteran pugilist with a pile of trophies yet still anxious for a fight: the old technique is still there, even if the punches no longer pack the same weight. For proof, you only need look at this 85-minute play, first seen in New York in 2009, which seeks to land a knockout blow on liberal pieties about race, but leaves them largely unscathed.The set-up looks pr…