Barbara Harris, founder of Project Prevention

Barbara Harris, who founded Project Prevention, is a controversial crusader for social change. She wants to reduce the number of children born to drug abusing parents. Her methods, which include offering cash to addicts prepared to accept sterilisation or long term contraception, have raised a storm of criticism in the US and now in the UK. HARDtalk asks whether Project Prevention is little more than eugenics dressed up in a cloak of compassion.