Muharram 2025: Every year on 'Ashura', streets across India echo with grief. Men beat their chests, women weep, and children carry memories of a battle that happened 1,300 years ago. From Delhi to Lucknow, from Karbala to Kashmir, millions of Shia and Sunni Muslims mark this month not with celebration, but with deep sorrow. Watch NDTV's Ahtasham Khan, Ali Abbas Naqvi report.