Chandigarh, June 26 -- Seeking resignation of Union education minister Dharmendra Pradhan over the NEET UG paper leak, the Congress on Thursday announced a 40-day nationwide campaign, themed "Chhatron ki goonj" (students' voice), from June 30 to mobilise students against paper leaks, examination irregularities, delays and cancellations, besides calling for an overhaul of the country's examination system. Addressing a press conference, Congress Working Committee (CWC) member Rajeev Shukla, Punjab Congress president Amarinder Singh Raja Warring and Chandigarh Congress president Rajwinder Lucky said the nationwide campaign would focus on engaging students at coaching centres, universities, hostels, libraries and public spaces....