It is a familiar image - a man wearing an orange jumpsuit and shackled in chains.
The prison uniform of the detainees at Guantanamo Bay has become a disturbing and well-documented visual symbol of the "war on terror" and debates about human rights.
But Birmingham doctor David Nicholl is donning the distinctive attire out of choice, to raise money for Amnesty International.
Consultant Neurologist Dr Nicholl, aged 40, who works at the city's Queen Elizabeth Hospital, is gearing up to run the London Marathon on April to raise awareness of the ongoing dispute about detention without trial at Guantanamo Bay and to raise funds for Amnesty International.
And he's hoping his shackles won't hinder his progress - he wants to finish in less than four hours.
At a meeting in London last week, former Beirut hostage Terry Waite and former Birmingham bank manager Azmat Begg, whose son Moazzam Begg was recently released from Guantanamo Bay, added their support to Dr Nicholl's marathon bid.
As a part of his training, Dr Nicholl will be doing a dress rehearsal on Sunday - running from his home in Hagley, Worcestershire, to the Birmingham Law Courts, where he will be greeted by Azmat Begg, in his Guantanamo kit, to protest at the proposed Government house arrest laws debated in the Commons last week.
Dr Nicholl said: "The situation in Guantanamo Bay is an international disgrace - 550 people have been held there for more than three years, without anyone having been charged with anything.
"Both the US and UK governments have acted in the most dreadful manner, ignoring the Geneva convention."
Dr Nicholl, who has been a member of Amnesty International for 20 years, grew up in Belfast.
He said: "Detention without trial does not work. The last time the UK government attempted to use detention without trial was in Northern Ireland in the early 1970s in a failed attempt to curb the IRA.
"Internment in Northern Ireland was actually the best possible recruitment drive for the IRA because it increased support for them. Do we learn nothing from history?
"The thing that concerns me is that if you ask most people they probably agree with locking people away without reason but it's wrong. It makes people feel marginalised and subsequently more likely to join terrorist organisations.
"I believe it is completely unjust to hold anyone, guilty or innocent, without charge and without access to legal representation for an indefinite period.
"If those detained in Guantanamo are guilty, then they need to be charged with a crime, tried and punished like any criminal. If they are innocent then they should be released.
"I'm nervous that people will think I am supporting terrorism.
"Of course I do not support terrorism - I grew up in Belfast where my best friend's father was killed by terrorists.
"But human rights are not an optional extra."