Hollywood stars are showing their support for Israel, after Hamas launched a surprise attack this past weekend, firing thousands of rockets from Gaza that have killed at least 900 people with more than 100 civilians kidnapped and held hostage. The attack, which occurred early Saturday morning on Shabbat and coincided with the Jewish high holiday of Simchat Torah, is being called “Israel’s 9/11” and is the deadliest day in Israel in 50 years. Hamas’ attack included a massacre at a music festival where Israeli rescuers say they have found 260 bodies. Not since the Holocaust have this many Jews been...