People that actually change the world don't need to advertise it on Twitter. I have friends that volunteer in Watts and Compton every other weekend (and have done so for years) that don't need to share it on social media. I can't help but think that this current Twitter slacktivism really diminishes their genuine mission.
But the problem is that society at large, especially on the internet, apparently just sucks across the board at anything resembling actual discussion. It seems impossible to both a) give an issue national attention and b) have a remotely civil or productive public conversation about it.
I don't know what to do about it except to say we all deserve each other.
Nations shouldn't be so big and migrating shouldn't be that hard. Just divide and divide until the group of people stop complaining.
Racists can live with racists. Progressives can live with progressives.
There are a lot of logistic issues, though, I doubt this will ever happen.