text:  That's the sound of the military activity in the capital on Saturday, with helicopters hovering over the city. They may yet take time to restore order, not least because the students have made demands going well beyond the future of the quota. Well, the BBC's regional editor, Atharajan Amarasan, is live here with me in the NewsHour studio. Can you give us a flay there, Atharajan, of what has happened on the ground today?