The UK has seen its share of terror lately.
Back in July 2005, London woke up to subway bombs.
On that day, London learned that the suicide bombers were not foreign terrorists but local residents.
This is what we learned about the killers from Daniel Johnson:
Every European capital has large numbers of these young men.
Every European country has mosques blasting violent messages to vulnerable young men like the ones who killed the innocent in London.
I guess not much has changed, or gotten better, since that July 2005.