Why I wanted to speak to my white friends about race

Next week at the Bunker at London Bridge there’ll be a week long festival of performances of plays based on letters.
One of them is My White Best Friend (And Other Letters Left Unsaid).
It’s written by Rachel De-Lahay and demonstrates the extent to which we can unconsciously insult and upset even those to whom we're closest.
Rachel De-Lahay was speaking to Jenni Murray on Woman's Hour on BBC Radio 4.