( CNN ) -- Two top Iranian opposition leaders have called on supporters to protest on February 11 , the anniversary of the 1979 Islamic Revolution , an opposition Web site reported . According to The Green Way Web site , a meeting took place Saturday between opposition leaders Mehdi Karroubi and Mir Hossein Moussavi at Karroubi 's home . They discussed the two executions that happened last week and the cases of 16 protesters who went on trial Saturday , the site reported . `` The widespread arrests of political activists and university students , the silencing of the media , and the forced confessions of prisoners are against the principles of Islam and the constitution of Iran , '' the leaders said in a statement . They also called for people to take to the streets on February 11 to demand their rights back as citizens of Iran , The Green Way reported . Meanwhile , state-run Press TV quoted Iranian President Mahmoud Ahmadinejad on Sunday as saying that the nation will deliver a harsh blow to `` global arrogance '' on February 11 . Press TV offered no details on or explanation of the statement . Opposition protests were launched after the disputed June 12 presidential election that gave hardline Ahmadinejad a second term . The government denies accusations of fraud . About 4,000 people have been arrested in the post-election crackdown . As of January 24 , the government had confirmed the deaths of at least 37 people in the protests or in detention , seven of those deaths happening on the religious holiday of Ashura . On Thursday , authorities hanged Mohammed Reza Ali Zamani , 37 , and Arash Rahmanipour , 20 , who had been convicted of being enemies of God and plotting to topple the Islamic regime . The two were convicted in mass trials of opposition supporters in August , but Rahmanipour 's lawyer said the young man was arrested two months before the election .
Top Iranian opposition leaders call for February 11 protest , opposition Web site reports . They called for people to take to the streets to demand their rights back as citizens of Iran . Mehdi Karroubi and Mir Hossein Moussavi also met to discuss last week 's executions . The two executions followed mass trials of opposition supporters in August .