I think this is really important in any scenario like this where it feels like "us vs them".
Outrage shines a light, but that is merely step one. If people really want change they need to imagine what it feels like to be someone in the other "group", and remember it's not comprised 100% assholes. Those other non-assholes need to know they are supported and appreciated - knowing that makes a huge difference to how likely they are to police themselves and lead by example.