Most meretz members are Jewish. I'm not saying that because I don't want Arabs to be part of this party, but a lot of people pretend that only Arabs militate within Meretz in order to show that no Jews want peace. It's just untrue. However, it is indeed true that the only party that can federate Jews and Arabs is the Meretz. The Hadash is antizionist and the labour party is an ethnically centered Jewish party. Nonetheless, the rest of the article is completely right.
from the article: Israel’s Greatest Loss: Its Moral Imagination