Home Grown terrorism

Over three years ago, I wrote an article that might explain the reason for 'home grown' terrorists.

http://www.kevilldavies.com/2014/05/souls-and-innocence-of-children.html

I shall not recap but merely say that second, third, fourth and beyond generation Muslims, may exhibit allegiances, derived from their family past, that belie their western upbringing, leaving them open to radicalisation.
Yesterday, a County cricket match at the Oval was abandoned when a crossbow bolt was fired into the ground. This is just the sort of action we can expect from these Muslim fighters; life threatening, terror inducing, cheap, almost always without risk of discovery.