When they left the restaurant, both Garfield and Emma hid their faces behind notecards that featured the websites of their favorite charities.
"Good morning! We were eating and saw a group of guys with cameras outside. And so we thought, let's try this again. We don't need the attention, but these wonderful organizations do: -->" read Stone's card.
Garfield's card listed a number of charitable organizations.
Stone and Garfield pulled a similarly philanthropic stunt back in 2012.
Last year, when Egyptian military forces clashed with Morsi supporters, Benedict Cumberbatch held up a piece of paper that read, "Go photograph Egypt, and show the world something important."
Celebrity Breakups and divorces of 2014 [PHOTOS]