Dear friends, one of the main reasons of why of why high-wage middle class workers have an irrational hatred against lower class workers, and lower class people in general. Might be that because high-wage workers are still oppressed (nurses, white collar office workers, etc), just like Mcdonalds low-wage workers, they still feel psychologically, physically and emotionally oppressed (because they are still slaves wage-slaves). Which leads to a feeling in most high-wage workers of pessimism by indignation, a sort of feeling of feeling miserable (because high-wage workers are still oppressed), so instead of pointing their blame and anger against the upper capitalist class (which is armed and more powerful) and harder to attack, what many middle class workers and people do is to point the blame of their miserable and oppressive feeling against the economic class that is more vulnerable, weaker, is not armed and easier to attack. Even the philosopher Homer considered vengeance as sweeter than honey.
I think that happens a lot not only within the working classes and different economic oppressed classes, for instance Israel is an example of that. The Israeli jews have been economically and politically oppressed for hundreds of years, but since they have risen in economic power in the last decades, and maybe because the israeli jews still feel miserable and oppressed. The Israeli government along with a high percentage of the Israeli population, are now pointing their pessimism by indignation against the palestines. Who are weaker and easier to blame
One might think that middle class workers and lower-middle class workers, because of their higher standard of living (like nurses, bank workers, white collar office workers) are supposed to be friendlier, less violent and more loving. But I've noticed that the higher the standard of living, the wealthier the working class is, the more anti-social, more introverted, the more narcissist, the more violent, the more hateful that they are. As opposed to lower class workers and lower class people, who live a stressful life, and even though they live a more painful life, they behave in a friendlier way than middle class professional high-wage workers.
That's why you never see a doctor, or lawyer yuppie with friendly faces in Wal Marts, they behave like psychorigid zombies, like Christian Bale in the movie American Psycho, haha