Revellers celebrate the death of Britain's former prime minister Margaret Thatcher in Brixton, south London April 8, 2013. Margaret Thatcher, the “Iron Lady” who transformed Britain and inspired conservatives around the world by radically rolling back the state during her 11 years in power, died on Monday following a stroke. She was 87. (Photo by Olivia Harris/Reuters)

An artwork entitled “Are you still mad at me?” by John Isaacs is displayed at the Death: A Self-portrait exhibition at the Wellcome Collection on November 14, 2012 in London, England. The exhibition showcases 300 works from a unique collection by Richard Harris, a former antique print dealer from Chicago, devoted to the iconography of death. The display highlights art works, historical artifacts, anatomical illustrations and ephemera from around the world and opens on November 15, 2012 until February 24, 2013. (Photo by Peter Macdiarmid)

A man, right, throws a chair at a business window as another man tries to restrain a woman attempting to stop the damage, after march to City Hall for Freddie Gray, Saturday, April 25, 2015 in Baltimore. Gray died from spinal injuries about a week after he was arrested and transported in a police van. (Photo by Alex Brandon/AP Photo)

Relatives of an earthquake victim are led away from ruins by a Policeman, on October 25, 2011 in Van, Turkey. Media are reporting more than 400 people have been killed in the 7.2 earthquake that struck in Eastern Turkey on October 23. The earthquake has left up to 40,000 people homeless in almost freezing conditions. (Photo by Ahmad Halabisaz/Getty Images)

A South Korean military vehicle drives past barricades at the military check point, near the Demilitarized zone (DMZ) separating South and North Korea on December 20, 2011 in Paju, South Korea. (Photo by Chung Sung-Jun/Getty Images)

Prince Harry and Pippa Middleton look-a-likes stage a walkabout In Soho to launch Alison Jackson's new book 'EXPOSED' on December 7, 2011 in London, England. (Photo by Ben Pruchnie/Getty Images)

Sara White, dressed as Ginny Weasley, a fictional character in J. K. Rowling's Harry Potter series, poses for portrait at the launch of “Harry Potter and the Cursed Child” at Foyles book store on July 30, 2016 in London, England. The script book of the play of the same name, which is on at Palace Theatre, billed as the eighth Harry Potter story, is on sale from midnight tonight. (Photo by Rob Stothard/Getty Images)

Victorian stuffed animals created by taxidermist Walter Potter at Potter's Museum of Curiosity in Bolventor, Cornwall. Potter created tableaux based on nursery rhymes, among them, “The House That Jack Built”, “The Guinea Pigs Cricket Match”, and “The Death and Burial of Cock Robin”. (Photo by Graham French/BIPs/Getty Images). 5th April 1973