Animal rights activists circulated photos of the husband and wife team behind Cafe Gratitude and Gracias Madre eating a burger and keeping freezer full of beefThe California-based husband and wife founders of celebrity-endorsed vegan restaurant group Cafe Gratitude say they have received death threats after it was revealed last week that they are raising, slaughtering and eating animals on their farm north of San Francisco. Matthew and Terces Engelhart, both in their sixties, who opened the first Cafe Gratitude in 2004 and whose celebrity followers have included Gwyneth Paltrow, Beyoncé and Sacha Baron Cohen, countered the firestorm of criticism with...