> Is hate, fear, or envy by themselves wrong, or only wrong when misdirected?

I think they are natural feelings that appear due to various reason. People struggle for centuries to control their impulses and this was used for millennia in the advantage of whom could manipulate them.

The second world war did not appear in a "happy world". It might even have started due to the great depression. For other conflicts, similarly - I don't think situation was great before them for most people.

I am afraid that social networks just expose better what happens in people's heads (which would be worrying as it could predict larger scale conflicts) rather than making normal people angry (which would be solved by just reducing social media). Things are never black and white, so probably is something in between. Time will tell if closer to first or second.