Organizing Nadim Kobeissi, studying computer science at Concordia University, said authorities are trying to stifle the free flow of information online.
"If the Internet is allowed to stay as it is, it will cause great political change [...]". "where everyone has access to the information just as well," said Mr.Kobeissi.
"This will entail political responsibility and knowledge sharing are unprecedented.
Mr. Kobeissi, a defender of freedom Internet self-proclaimed, has created a WikiLeaks mirror site that duplicates the material is no longer available on the original Web site.
Nearly 2,000 of these sites have been created since WikiLeaks has been closed.
Bruno Joyal, a student of mathematics at Concordia University, said that he feared that a dangerous precedent will be defined if WikiLeaks is successfully.
"We are going to approach a situation where the United States wants to ensure that leaked secret documents cannot be published," Mr. Joyal said.
"We believe it is very important that the press be able to publish these documents.
Protesters also called for the release of Bradley Manning, American soldier accused of stealing classified and sensitive documents and giving them to WikiLeaks.
Similar rallies were supposed to be held Saturday at the United States Ireland, the Netherlands.
In recent weeks, WikiLeaks published parts of a cache over 250,000 secret u.s. Department of State diplomatic cables everywhere in the world.
Documents, published in collaboration with several major media organizations reveal behind-the-scenes discussions between diplomats and assessments often little flattering of foreign leaders, ranging from the u.s. allies such as the Germany and other nations such as the Libya, the Iran the Afghanistan Italy.
Founder of WikiLeaks Julian Assange was released on bail Thursday.
It will be limited to Manor House of a supporter, but free to return to work on its website, as when he fought trying the Sweden extradite on the allegations of rape and indecent assault.
Speaking Saturday outside of the House in the East of England, Mr. Assange called the case of a "parody" Sweden He also said that he and others at WikiLeaks face significant risks.
"There is a threat to my life, there is a threat to my staff," he said, without providing further details.
"There are significant risks facing us."
American Eric Holder said repeatedly that a criminal investigation of WikiLeaks cable release is underway.
-With the files from the Associated Press
