In direct opposition of your proposed thesis statement is the idea that 'hatred' (may be too strong) towards certain groups can be STARTED or increased with increasing education.
When I was young, I drew a swastika on a toy paper gun. I drew it cause it looked like a cool symbol. Long story short, my parent took it from me, tore it up, told me it was a bad symbol, and not to do it again. That was my last drawing of one. I didnt know why...until later in life following education. I learned of the Nazi party, the atrocities. I learned why it represented evil. I still did not know how evil until seeing photos prison camps in a "Time" picture book. The savagry and brutality shown in those photos sticks with me. The thought of it saddens and sickens me and makes me 'resent' those at the time that both participated and/or sat idly by...on all sides. And to respect those that sacrificed much to try to end it.
So my story is that 'nothing' grew to 'resentment' of others through education and my personal experiences.
Just another angle to investigate...
Now to support your thesis:
I believe that youths touting and displaying supremist ideas and appearances, praising the Nazi party, etc. today do so MOSTLY out of the need to rebel. I think if they truly knew what they were representing, they would pick another avenue to rebel.
...or at least I hope so.