They have those recruiting stations in all countries. People seem to turn a blind eye to them and try to pretend they don't exist. I don't understand that.
Spend your life being reviled for being Muslim, discriminated against even though you've done nothing wrong - and somebody offers you a chance to BELONG. That's how radicalization happens. The way to pull the teeth of ISIS and similar organizations is to welcome those on the fringes. Pull them in to society, leave nobody an outcast on the basis of race or religion. Starve them of recruits.