The event was attended by over 10,000 people, who condemned the arrest and maltreatment of young people following the events of April 7.
His letter condemned the arrest, trial and deportation of Vallandigham, saying they "were arbitrary and illegal acts.
We condemn in the strongest possible terms the ongoing slaughter, the arbitrary arrest, and the torture of peaceful protestors.
It also condemned the arrest of an estimated 119 people in the crackdown on the protests.
Reporters Without Borders quickly condemned the arrest in 2011 and called for his immediate release.
Senior editors of The Times have condemned the arrest and called for his immediate release.
His party strongly condemned the arrest of Prasad, labeling it 'illegal'.
"We condemned the arrest as soon as we heard about it," he said.
Reporters Without Borders condemned the arrest as "censorship".
The Commission also condemns the arrest of opposition leaders who have completed three weeks of hunger strike, putting their lives in danger.