By the time CCTV footage is out to reveal actual facts .. the victims might already lying in ICU fighting for their lives .  Angry mobs really hard to silence due to their number usually overwhelms the bawak berbincang ones.
Same like socmed posting fitnah  "mabuk" mere hours  after the accident happened. By the time investigation done/actual truth is out days later  , damage already done.    Netizens already filed the case into  'sebab itu alcohol haram/patut diharamkan "    folder, something they need to keep track often  for use in future debate.