PBS America Saturday

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Part one of two. The Allies revealed themselves as divided and rivals in peace after 1945. This documentary examines the emerging new world order of the postwar years

Part two of two. How, in great secrecy, top scientists had used wartime to perfect what was to become the absolute weapon - the atomic bomb

Exploring more than a century of racial segregation and racism, an account of the secret history of the Ku Klux Klan beginning with its creation in 1865. Part one of two

Following the full history of the Ku Klux Klan up to the present day. Investigating how the white supremacist group still has an impact on society today. Part two of two

The documentary reveals more family strategies at work, and the heavy price the young pay in hostile takeovers

Part one of two. How Los Angeles has transformed from a little lawless cow town into one of the biggest cities on the planet in the space of less than 150 years

Part two of two. The story of the transformation of Los Angeles to a small outpost of Mexico to the world-famous city it is today

How Russian Tsars Peter and Catherine the Great's conquering part of Northern Europe, the Crimea and the Caucasian region has impacted Russia today

The Red Army, forged by Leon Trotsky from revolutionary guards and members of the Tsarist troops, becomes the sword of Communist Russia

Investigating Putin's wars in Georgia, Chechnya and Ukraine and his readiness to lay the blame on the Western liberal states

Part one of two. The Allies revealed themselves as divided and rivals in peace after 1945. This documentary examines the emerging new world order of the postwar years

Part two of two. How, in great secrecy, top scientists had used wartime to perfect what was to become the absolute weapon - the atomic bomb

Exploring more than a century of racial segregation and racism, an account of the secret history of the Ku Klux Klan beginning with its creation in 1865. Part one of two

Following the full history of the Ku Klux Klan up to the present day. Investigating how the white supremacist group still has an impact on society today. Part two of two

The story of Vito Genovese, who ruthlessly dealt with disloyalty in the Mafia and quickly rose to prominence - but unwittingly caused his own downfall