Race intersects with veganism...
Someone on livejournal made this vegan advocacy poster (which I think is offensive/racist.)
Vegans of Color posted this reply.
And debate ensued at the original livejournal post. Though not much of a debate. Mostly consisted of various people trying to get the original poster to understand why the image is offensive, and the original poster persisting in obtuse-atude.
But at least one person in that vegan group was interested to learn more about this Intersection, and posted it as a topic. Which started with some good answers, and then devolved into a I'm-poor-and-I'm-a-vegan thread.