Do white people find the term "White trash" offensive?

[BeerMoney]

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I refer to many of the white people in the bar I go to once in a while a white trash.

There are most definately diffrent calibur of white people.

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I don't understand racism. Some would find white trash to be racist. I find it to be a valid descriptor.

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Why do you need a way to put people down? To feel better about your own position in society? Why exactly do you do it?