A group of UCLA medical students and activists from Single Payer Action on Friday urged shoppers at a Whole Foods in Los Angeles to boycott the store.

Carrying signs saying “Don’t Shop While Americans Drop,” “CEO Mackey is Wacky,” and “Full Care for All,” the students said they were boycotting Whole Foods in response to Whole Foods CEO John Mackey’s op-ed in the Wall Street Journal arguing that there should be no American right to health care.

At their first event in Sequim, Washington earlier this week, 700 people showed up to support their call for single payer national health insurance.

President Obama, on the other hand, has refused to meet with them.

But that’s not stopping the Mad as Hell Docs.