CEP Senior Advisor Ian Acheson writes: "Ive yet to meet an oncologist, thank God. But if I did turn up to be told I had cancer I wouldn’t expect him to start treating me with a chainsaw. That was my thought this morning when I read that our national counter-terrorism chief had described the effect of exposing kids to violent content online as carcinogenic. Matt Jukes, Asistant Commissioner for Specialist Operations for the Met Police, suggested that a ban on social media for the under 16s was a way to address the scourge of adolescent maniacs mobilised by online extremism who turn hateful thought into lethal action."