Interesting take on the psychology of bullies.  What has been learned over decades of study of those who bully shows a few different factors. (1) Bullies are insecure about themselves, deeply so, and adopt a stance of dominating others to avoid feeling weak or ineffectual themselves; (2) their major defense is "do to others before they do it to you;" (3) A sadistic anger is at the root of their emotional disturbance; (4) they operate in a culture of support for their victimization of others, see others who do not oppose them as being weak and deserving of the abuse, and (4) gain temporary relief of their inner tensions by abusing others and making others fear them.  Add into the mix the internet that allows for anonymous attacks on the integrity of others, and a national, powerful figure who operates on such a basis themselves and encourages others to do the same (or worse), and you have a hostile and expanding culture of hate and oppression.  Bullies need control far more than pity.