SAN FRANCISCO, CA - APRIL 19: Facebook CEO Mark Zuckerberg looks on before the start of a town hall style meeting with U.S. President Barack Obama at Facebook headquarters on April 20, 2011 in Palo Alto, California. (Photo by Justin Sullivan/Getty Images)
AUSTIN, TX - MARCH 20: A police officer helps to secure the area after one person was injured by a package containing an incendiary device at a nearby Goodwill store on March 20, 2018 in Austin, Texas. Despite a heavy response of local and federal law enforcement officials at the scene, police have stated that they do not feel the incident is related to the recent series of package bombs that have been detonated in the city. (Photo by Scott Olson/Getty Images)
Austin Police Chief Brian Manley speaks during a news conference near the scene where a woman was injured by a package bomb on March 12. Manley told reporters that there are similarities in the four devices that exploded.
DAMASCUS, SYRIA - MARCH 19: Damaged and collapsed buildings are seen after Assad Regime forces carried out airstrikes in Eastern Ghouta's Douma town in Damascus, Syria on March 19, 2018. (Photo by Ammar Sab/Anadolu Agency/Getty Images)
A Syrian woman carrying a child evacuated from the Eastern Ghouta enclave walks pass with other civilians through the regime-controlled corridor opened by government forces in Hawsh al-Ashaari, east of the enclave town of Hamouria on the outskirts of the capital Damascus on March 15, 2018.Thousands escaped Syria's rebel-held Eastern Ghouta into government-held territory AFP correspondents on both sides said, the largest numbers since the regime assault on the enclave began. / AFP PHOTO / LOUAI BESHARA (Photo credit should read LOUAI BESHARA/AFP/Getty Images)
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