Islamabad [Pakistan], February 11 (ANI): Pakistan Tehreek-e-Insaf (PTI) chairman Barrister Gohar Ali Khan called for peaceful protests across the nation against Returning Officers (ROs) on Sunday, Pakistan-based The Express Tribune reported. He said that the people of Pakistan had complete trust in former Pakistan Prime Minister Imran Khan’s vision of “slavery unacceptable” in the aftermath of the February 8 polls. He noted that despite the challenges faced on February 8, the people have showcased a clear and transparent mandate in favour of the PTI. He accused the ROs of “attempting to usurp …