Let's Try Leading From The Front, For a Change

British Police Name Two of Three London Attackers as May Calls for Crackdown
LONDON—One of three knife-wielding assailants who killed seven people in a weekend terror attack here was known to security services, authorities said Monday. Neighbors said his zeal for Islamic extremism was broadcast to the nation in a television documentary called “The Jihadis Next Door.”

But police said they had no intelligence suggesting the man, Khuram Shazad Butt, a 27-year-old Pakistan-born British citizen, was plotting violence ahead of Saturday’s rampage.
I think we may have hit upon a flaw in your system, chief.