London Bridge attacker’s dark past in spotlight

Usman Khan, who killed two people and injured several others, had a terrorism conviction and was only released from prison last year.

It has been a week since the attack on London Bridge in which two people were killed and many others injured.

The attacker, Usman Khan, had a conviction for terrorism and was only released from prison last year.

He was taking part in a rehabilitation programme when he began stabbing people. The attack has led to many questions about the effectiveness of such initiatives.

Al Jazeera’s Emma Hayward reports.