ISLAMABAD- Chairman Pakistan Tehreek-e-Insaf (PTI) Imran Khan today claimed that his march towards Constitution Avenue in Islamabad’s Red Zone would be peaceful. “Our ‘Azadi March’ is constitutional & democratic,” Khan tweeted. Imran Khan asked his party workers to remain peaceful during the march and he is likely to lead from the front. The heavily guarded Red Zone houses Pakistan's top government buildings and many foreign embassies. Imran Khan announced yesterday that his party members would resign from Sindh and Punjab Assemblies in a bid to build pressure on PM to quit.