At a time when the Cold War hampered cultural exchange between the East and the West, the early DOK Leipzig concept of presenting international and politically engaged films was a conceptual issue from the start, as the perceptions about the “right” way to act politically differed significantly on each side of the Iron Curtain. DOK Leipzig, Germany's biggest documentary and animation film festival, has been and still is an important platform for directors to present their --politically and socially engaged-- films to the public and groups such as the "Jury of the United Services Trade Union Ver.di" (the friendliest and most excited co-jurors I have ever met):

A festival -- next to "tobacco products“ and "fashion for gentlemen.“

"For world peace: Leipzig – city for creative discussions, exchange of experiences and information."

... including flags from East & West, like UK, North Korea, Germany, Cuba, Australia...
Shortly after German reunification attendance figures dropped, with just 5,500 people attending in 1993; however, they quickly picked up and a decade later, in 2008, the festival had more than 27,000 attendees.
On the occasion of DOK Leipzig's 60th edition in 2017, Andreas Kötzing took a look back at the festival history in his essay "Leipzig in the Autumn."
All photos cc German Federal Archive
photographers: Raphael Verehel & Waltraud Grubitzsch (1), Friedrich Gahlbeck (2,3,4,5)