And here's the wiki link. I haven't heard of him but he wants Blair arrested.
The Grime Behind the Crime
January 7, 2013
Could an astonishing explanation for the rise and fall of violent crime be correct?
By George Monbiot, published in the Guardian 8th January 2013
It seemed, at first, preposterous. The hypothesis was so exotic that I laughed. The rise and fall of violent crime during the second half of the 20th century and first years of the 21st were caused, it proposed, not by changes in policing or imprisonment, single parenthood, recession, crack cocaine or the legalisation of abortion, but mainly by … lead.
George Joshua Richard Monbiot (born 27 January 1963 in Kensington, London) is an English writer, known for his environmental and political activism. He lives in Machynlleth, Wales, writes a weekly column for The Guardian, and is the author of a number of books, including Captive State: The Corporate Takeover of Britain (2000) and Bring on the Apocalypse: Six Arguments for Global Justice (2008). He is the founder of The Land is Ours campaign, which campaigns peacefully for the right of access to the countryside and its resources in the United Kingdom. In January 2010, Monbiot founded the ArrestBlair.org website which offers a reward to people attempting a peaceful citizen’s arrest of former British prime minister Tony Blair for alleged crimes against peace.