What's new is that we have the deeds captured under multiple angles in full HD, and still around 30% of the country believes the victims were actually the aggressors and deserved to die. They're so indoctrinated that they're able to rationalize away their own eyes' evidence. And they feel comfortable enough in the current environment to try and gaslight you about it.
No, this isn't new. Everything you’re saying happened with police killing too.