What sparked the mass violence in South Africa

South Africa has recently experienced its worst violence since the end of the apartheid regime 27 years ago.

More than 200 people were killed and thousands arrested in a week of civil unrest during which hundreds of shops were looted, factories set ablaze and government infrastructure destroyed.

The Guardian's Africa correspondent, Jason Burke, explains how the violence was sparked by more than just the jailing of the former president Jacob Zuma, and what impact it could have on a country where more than half of the population lives in poverty