Guest: David O'Brien, youth worker and director of mental health for ETA

It is evident that violent attacks committed by angry young men, regardless of the ideology behind them, are increasing. Whether motivated by white supremacy, incel subculture or other extremist belief, the path toward radicalization usually starts online and can end in violence. ETA is a GTA-based service that tackles hate and extremism in young people, often working with people who other agencies often refuse — or are unequipped — to deal with. Youth worker David O'Brien joins "This Matters" to talk about the approach to working with these individuals.

This episode was produced by Brian Bradley, Paulo Marques and Raju Mudhar.