It was the best hummus I’ve ever tasted. It came in a bowl, drenched in olive oil, with a few small garbanzos and shreds of parsley and hot green peppers sprinkled on top, and just the right amount of lemon juice. The elderly Palestinian man had made the hummus from scratch and served it to us with a salad plate, a bowl of falafels and a tall stack of hot pitas for just under 8 shekels. I was eating in a refugee camp in Ramallah with Bassem Eid, the founder and director of an NGO called Palestinian Human Rights Monitoring...