I couldn't find detailed statistics breaking down the total numbers of detentions, how long they were for, and how many were released without charge. The figures Lydia found from Hansard don't give the figures for those detained for 10 days or less, which seem to account for most of the detentions if you compare the Hansard figures with the ones from the BBC.
Of course some police officers will argue for an increase in the detention period. People will be in favour of anything that makes their job easier. However, making a job easier for the employee doesn't necessarily mean a better result or a more efficient use of the employer's resources. If I have 28 days to complete a task, I'm hardly likely to complain too much if I'm given 42 days to do it instead, even if I can usually manage it in 10 days.
When the job in question involves depriving people of their civil liberties then we need to be extremely certain that there is a genuine and urgent need for the extension. I'm not convinced there is.
It seems common sense to me that the American and British illegal invasion of Iraq has provoked more terrorism. Iraq under Saddam was a repressive state, but Saddam also repressed Islamicist groups - Saddam and Al Qaeda didn't have a mutual fan club by any stretch of the imagination. Now Iraq is a basket case, there is no central government authority outside Baghdad, and warlords and Islamist groups dominate much of the country.
Brenna's comments about how most terrorism incidents in Europe are non-Islamist certainly ring true here in Spain where there is an active campaign by the Basque group ETA. A couple of years ago they planted a bomb at a bus stop outside a police station not far from where I live, a six year old girl and her grandfather were killed.
We humans have a strange way of assessing risk. It seems to be something deep rooted in the nature of our species. We concentrate our fears on risks like Islamist terrorism where it is easy to lay blame on some "other", rather than on those risks where it's harder to lay blame on a specific individual or group in society. In fact we can get quite hysterical about things which pose a relatively minor risk, and pay far less attention to much greater risks. Politicians cynically play on our faulty perception of risk in order to gain party advantage.
Here are some intriguing statistics I found mooching about online whilst I was avoiding doing any proper work -
UK deaths 2001 - 2008 due to:
lightning strikes - c. 25 (annual average 3-4)
train crashes - 32
children murdered by strangers - 48 (annual average 5 to 7)
terrorist attacks - 56 (all during the London Tube & bus bombing, figure includes the suicide bombers)
electrocution by bedside lamp or alarm clock - c. 160 (annual average 20)
falling whilst getting out of bed - c. 160 (annual average 20)
children murdered by a parent - c. 600 (annual average 75 - this figure relates to biological parents, not other family members or step-parents)
women victims of domestic violence - c. 800 (annual average 100)
accidental drowning - c. 1500 (annual average 190)
falling downstairs - c. 4800 (annual average 600)
all homicide - 5968
car & motorbike crashes - 25,114
suicide - c. 26,500 (annual average 3,300)
See
www.mediahell.org/ for an interesting discussion of this phenomenon.