Communism is a social, political and economic ideology and movement with the ultimate goal of replacing private property with public ownership.
Communism is structured on common ownership of the means of production and natural resources of a society, to replace private property and a private-based economy. French philosopher and writer Victor d'Hupay coined the term in its current meaning in 1777; 16th century English statesman Thomas More is also said to have advocated a form of communism in his book Utopia. In its modern form, communism grew out of the socialist movement in 19th-century Europe.
This week, Hungary welcomed the first Israeli Prime Minister to visit the country since the collapse of communism in 1989. Prime Minister Victor Orban stood alongside Benjamin Netanyahu as he said that his country's collaboration with Nazi Germany during World War II was a "mistake" and a "sin" as it failed to protect its Jewish community. Correspondent Stefan Bos has more about the visit.
A Russian project to remember ordinary victims of Communist terror made its first foray into western Europe this week, when four plaques dedicated to Czechs executed in the 40s and 50s were attached to buildings in Prague showing their last known address. Since the 'Last Address' project began in Russia in 2014, some 500 plaques have been unveiled across the country, with a handful too in Ukraine.
Is there an acceptable version of Communism after all its failures? A German author's idealistic book called "Communism for Kids" is now ruffling right-wing feathers in the US - although it was intended for adults.
The Russian Revolution of 1917 was a starting point for hopes and dreams that ended in terror and war. 100 years later, what remains of this ideology? Several exhibitions and projects aim to find out.