Why are BPSC aspirants protesting in Patna? What is Khan Sir's role?

Bihar Public Service Commission aspirants in Patna have been protesting against changes to the rules for the upcoming 70th BPSC Preliminary Examination, demanding that the exam be held in a “one shift, one paper” format instead of using the “normalisation of marks” process, which adjusts scores for exams held in multiple shifts to ensure fairness. Slippers and shoes spread after lathi charge on BPSC candidates during their demonstration outside of Bihar Public Service Commission office in Patna in protest against the change in rules of the 70th BPSC Preliminary examination on Friday. The protests near the Bihar Public Service Commission office in Patna escalated on Friday. Despite the protests, the BPSC has confirmed that the 70th BPSC Preliminary Examination will be held as scheduled on December 13.