Deep Dive - Bullying in schools: What's behind some of this brutal behaviour?

In a recent viral video, a Qihua primary school student was seen being repeatedly attacked. The case is under police investigation but is bullying getting worse in Singapore? What are the causes and why are perpetrators filming their deeds? Steven Chia and Crispina Robert speak to Cheung Hoi Shan, assistant professor at the National Institute of Education, MOE master school counsellor Sean Ng and Beyond the Label ambassador Cindy Chu.