When she isn’t dispensing makeup tips on Instagram, Rep. Alexandria Ocasio-Cortez dispenses sophomoric political maxims, most recently in her defense of “purity tests.”

The stink of impurity here is upon Pete Buttigieg of Harvard and McKinsey, who had a fundraiser with some well-off people who drank a few $900 bottles of wine with some Napa vintners who are longtime Democratic donors. One of Mayor Pete’s primary rivals, Sen. Elizabeth Warren, made a fuss about that fundraiser at the last debate. (Never mind that she is no stranger to big-money events herself.) Buttigieg dismissed the criticism as a silly “purity test,” but Ocasio-Cortez, speaking at a rally with another Democratic primary candidate — her fellow socialist, Sen. Bernie Sanders — took a stand for shallow fanaticism.

“For anyone who accuses us for instituting purity tests,” she said, “it’s called having values. It’s called giving a damn. It’s called having standards for your conduct to not be funded by billionaires but to be funded by the people.”