[video link] Faith in humanity status: restored. They're from Veterans for Peace. There's an article about the incident in the local paper, here.
Babylon Restaurant, the business targeted in the possible hate crime, was featured in this Boston Globe article just one month ago. If you're in Massachusetts, maybe go have a meal there sometime soon and tell them Boing Boing sent you. Some good Yelp reviews on their falafel and grape leaves! (via @adlangx)