To the editor:

For years I've argued that progressivism is a faith-based movement. Conor Friedersdorf provides the perfect proof of this in vegans' outrage against Cafe Gratitude. ("Cafe Gratitude: Why are L.A. vegans eating their own?," Opinion, May 6)

Owners Matthew and Terces Engelhart violated vegan dogma by choosing a personal lifestyle that offends true believers. Apparently you cannot provide quality vegan meals in a restaurant unless you are pure in body, mind and spirit in your public and personal life.

Sounds religious to me.

David Pohlod, Oak Park