Some of us may want to see a definition of “fair.” But a concrete definition would destroy the versatility of the word, which is what makes it so useful politically.

If you said, for example, that 46.7 percent of their income — or any other number — is the “fair share” that the rich should have to pay in taxes, then once they paid that amount, there would be no basis for politicians to come back to them for more — and “more” is what “fair share” means in practice.

Life in general has never been even close to fair, so the pretense that the government can make it fair is a valuable and inexhaustible asset to politicians who want to expand government.

“Racism” is another term we can expect to hear a lot this election year, especially if the public-opinion polls are going against President Barack Obama.