Example? Cos I'm not a fan of the rationalisation of the World Wars as "okay but it did advance technology a lot."
Hatred is what imbalances the status quo. In fact when hatred becomes the status quo, then we've lost the plot as humanity.
The Internet is a beautiful idea, but as an ever-evolving real world system, we can no longer afford to idealise it. We do have responsibility to steer it somehow, in order to battle entropy.
In the idealised Internet, free speech is truly free. But when we talk about the Internet now, is it really the one that we dream it to be? Most people on the Internet are actually spending their time in a small number of ecosystems, like Facebook, Google, Twitter, YouTube. Each of these has its own set of rules, which ultimately defines how we communicate and therefore the limitations. I daresay that currently they are fertile ground for hatred - and it's not entirely their fault, it's just how the nature of the systems work.
I guess I'm still fresh from watching Silicon Valley's latest episode, but the way I see it, there is no quick remedy to tackle hatred - we need an Internet 2.0 to give ourselves another chance to build a much more neutral and open net.