As advocates of sustainability, we at Aytzim realize that no progress can be made in creating harmony on the planet when there is not harmony between human beings, and that eradicating violence and anti-Semitism in all its forms goes hand-in-hand with eradicating violence to the planet. As Jews and as defenders of both human rights and the Earth, we were horrified this past Shabbat when a white-supremacist terrorist murdered 11 at the Tree of Life synagogue in Pittsburgh.