Terrorism Risk
To put historic risk of terrorism in perspective, I had to point the following out to a senior police officer:
In 1972 the UK saw 10,631 terrorist shootings and 1,853 bombings; 470 people were killed by terrorism.
In 2007, there were 47 shootings and 20 bombings - all in Northern Ireland and three people were killed by paramilitaries.
This was from a BBC article a few years ago.