America retaliated to 9/11 by killing 200,000 Iraqis So Iraq had population 0.5% of its population killed (for something it had no responsibility for). So Israel needs to kill 0.5% of Gaza.... which is around 4000 people. I guess 15 9/11 mean 15*4000=60,000

It's called onboarding and aims to garner public support by ripping open old scars. Just like the decapitated babies claim to dehumanize the enemy.