The international campaign FreeAssange is currently underway, as a number of events are held across the world on June 19-25 to mark the fourth anniversary of his political asylum in the Ecuadorian Embassy in London.
Varoufakis, who is one of the speakers at the event in Brussels, said that "we don't have democracy," but Assange's release would give a chance to its emergence.
The resistance to telling and hearing the truth is about Europe "that is not worth having," he said.
Assange launched the WikiLeaks website in 2006. Since then, the site has released millions of classified diplomatic documents from around the world on espionage practices, war crimes, torture and many other human rights violations. The US charges against the whistleblower include espionage, conspiracy, theft of government property and computer fraud — for which Assange could face about 45 years in prison.
Ecuador's decision to grant Assange asylum helped him avoid prosecution by the United States over a range of controversial revelations made by his whistleblower website.