Why do liberals say that Billionaires don't pay their fair share?

Billionaires may pay a lower effective tax RATE than millionaires, but they still pay more in taxes than millionaires.

Millionaire Mike paid $100 thousand in taxes.
Billionaire Bob paid $100 million in taxes.

In 2023 Biden's Department of Health and Human Services spent approximately $419,470 on a study to determine if "lonely" rats were more likely to seek out cocaine than happy rats.

Did Mike or Bob effectively pay out more for important studies like these?

(It turns out that lonely rats are buying much more cocaine than happy rats. Now we know.)
Why do liberals say that Billionaires dont pay their fair share?
Why do liberals say that Billionaires don't pay their fair share?
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