Congress President Mallikarjun Kharge, responding to BJP's criticism on Karnataka Deputy CM DK Shivakumar's 'Constitution will be changing' remark, said nobody can end reservation. "We did Bharat Jodo Yatra to save the constitution," Kharge said in Rajya Sabha. Earlier, Shivakumar said constitution will be changing to give 4% quota to Muslim contractors in state government contracts.