system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When Americans say to increase taxes on the rich, what taxes are they specifically talking about and what changes would make it "fair"?
gpt
Usually, they're referring to income taxes. (There are also arguments that the *capital gains* tax should be rolled into the income tax; that is, rather than being considered separately and taxed lower, profit from investments should be taxed as income.)

People obviously disagree on what the most fair tax rates would be.