Racism is either a symptom or a tool:
Those who cant make sense of their situation being unsatisfactory may fall prey to it to soothe themselves.
Those who hoard all of the worlds wealth use it to distract from that fact.
Worth noting that a lot of the people raging about immigrants don’t see themselves as racist.
I have a quote that fits this situation well:
When you‘re dead, you do not know you are dead. Its only painful and difficult for others. The same applies when you are stupid.
It’s not about inability to understand, mind, it’s about unwillingness to understand.
There are plenty of people who have mental deficiencies who are well aware of that, and how much trouble they have understanding the world around them. But they at least try.
The same can not be said for those who are perfectly capable of understanding, yet simply choose not to.
