Vivian Silver, a Canadian-born Jewish humanitarian living near the Gaza Strip, has gone missing after Hamas fighters attacked Israel over the weekend. Silver was known for her work to improve the plight of Palestinians and create a shared society between Jews and Arabs, and her son has started a Facebook page to spread awareness of her disappearance. The Israeli government is working with the international community to locate Silver and other missing people, and her friends and family remain hopeful that she will be found safe and sound.