Imphal: A YouTuber from Manipur who challenged the National Investigation Agency (NIA) to arrest him last year appeared in a fresh video, shouting at the security forces during recent protests in the border state. Sources said details of the YouTuber who identifies himself as Pt Marvin Kuki and runs a YouTube channel of the same name under the handle @PaotinmangChongloi have been flagged to the cyber cell. On March 8, the Kuki tribes in Manipur tried to stop public transport and clashed with the security forces who were trying to enforce the Centre’s order to ensure free movement of people in the violence-hit state that is under the President’s rule. A protester was killed and many others including security force personnel were injured. Paotinmang uploaded a video of the March 8 protest in which he was seen shouting at the security forces to “go back”. “If the central forces can’t keep neutral in both communities, please leave us alone. We will fight them,” he said. The central forces escorting trucks carrying oil and cooking gas …