In this 2015 photo provided by Birthright Israel, a Birthright Israel group tours Mount Herzl, the site of Israel's national cemetery. Birthright Israel offers free trips to Israel for young Jewish adults ages 18 to 26. Since its inception in 1999, more than 500,000 young Jewish adults from around the world have taken Birthright trips. About three-fourths of participants are American. The program is funded by the Israeli government, Jewish nonprofit organizations and philanthropists. (Sylvie Rosokoff via AP)
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