Mon, 12/04/2023 - 18:24 Tech Insider Sheryl Sandberg, the former Meta COO, joined other luminaries at a UN summit and denounced Hamas' gender-based violence in the Oct. 7 terrorist attacks in Israel.Drew Angerer/Getty Images Tags International, Tech, Military & Defense, sheryl-sandberg, Israel, human-rights, united-nations-un Source Sheryl Sandberg, Hillary Clinton, Sen. Kirsten Gillibrand and others issue a gl…