I guess we are now learning everyone has their lone wolves who are easily corrupted in the name of Allah or God.
Pick your religion and your soup du jour for the day.
Here in the US we burn black churches, kill black parishioners, firebomb abortion clinics, kill gay people and shoot abortion doctors in the name of God.
Of course we don't call those people terrorists. We call them hate crimes.
The Islamist behind the Westminster terror outrage was investigated by MI5 as part of a plot to blow up an Army base using a remote-controlled car, The Telegraph can reveal.
Adrian Ajao, 52, who killed four people, including a police officer in last Wednesday's attack, is understood to have been probed six years ago over alleged connections to four al-Qaeda-inspired terrorists.
Zahid Iqbal, Mohammed Sharfaraz Ahmed, Syed Hussain and Umar Arshad, were jailed for a total of 44 years in 2013 after admitting plotting to launch an audacious bomb attack on a Territorial Army base in their hometown of Luton.
Ajao had moved to the town in 2009 following two stints in Saudi Arabia, and lived just a few hundreds yards from one of the ringleaders.
It is thought the fitness fanatic and body builder may have also come into contact with members of the gang when they started preparing for jihad by attending a local gym.
Following last week's attack, Theresa May, the Prime Minister, confirmed that Ajao - who changed his name to Khalid Masood after converting to Islam - had been investigated by the security services for links to "violent extremism".
However after carrying out a risk assessment and looking into his background, it was decided he did not pose a terror threat.
Over the weekend more information began to emerge about Ajao’s recent movements.
As well as having two daughters from an earlier relationship with businesswoman Jane Harvey, with whom he lived in the village of Northiam near Rye in East Sussex, Ajao also has a son and a daughter with his most recent partner, Rohey Hydara.