There will always be disenfranchised young people and those who feel disenfranchised. even more so after Brexit.
We don't know whether this young man was actually disenfranchised. He went to grammar school and wasn't at the bottom of the heap in terms of opportunities available to him. Maybe he had learning difficulties or other behavioural conditions that were ignored by the family and his school, who knows. There will always be those that are susceptible to be radicalised and instrumentalist because they are angry and frustrated or feel unimportant and unloved.
We need to look at the global picture and get to those who radicalise and train young Muslim people both here and abroad. I agree that SA is the big elephant in the room and that there are complex relations between the UK and SA that allow Saudi Wahhabism to flourish internationally.
By the time we have electric cars and renewable energy systems in place and don't really on ME oil, Saudi probably owns 80 % of British assets. Yet it's made out that the EU is our enemy. It seems hopeless.
I would like to know how we as a country are going to deal with the ingrained machismo of men from MENA.
Often boys from arab backgrounds are raised to be gods in their families and taught to respect their fathers and male elders in their communities whilst having little respect for females (female teachers know all about this). There is this sense of hurt ego and pride and lashing out and retaliating when they feel slighted.
We can be sure that this man had no love in him, no kindness, no heart. A perfect weeping for global terrorism.