Newly-released video of Boston Marathon bombing

This video was first published in the Boston marathon bomb attack and shows the exact moment when the second bomb exploded. CNN's Deb Feyerick more

Immediately after the Boston marathon bombing earlier this year, the National Brulee Union's Boston Bruins held a game in Boston. This is the first professional sports event in the city since the tragedy. The video virus that sang the national anthem song not only spread the people of Boston, but also hoped that the country can recover quickly and effectively from attack. On May 1, 2011, when the Philadelphia team took part in the New York Mets, two teams from the area directly affected by the 9/11 attack spread into the crowd and Osama bin Laden was killed. The fans continued singing "U-S-A, U-S-A", but since the players of the two teams have not heard the news, I did not know what caused the cheering.

On April 15, 2013, two bombs exploded near the finish line of the Boston marathon, three people died and more than 260 people were injured. After a fierce search, the police arrested the suspect on the bombing, 19-year-old Dzhokhar Tsarnaev, his brother and suspect, 26-year-old Tamerlan Tsarnaev died after a law enforcement gun battle. Investigators concluded that Czarnaevs who spent his childhood in the former Soviet Union in Kyrgyzstan planned and carried out attacks on its own, and had nothing to do with the terrorist organization.

Related shooting incidents occurred during the explosion of the two pressure cooker bombs in the Boston Marathon on 15th April 2013 followed. The bomb exploded near the marathon finish line on Boiliston Street, about 12 seconds at 210 yards (190 meters) from 2:49 pm Eastern Standard Time. They killed three people and an estimated 264 people were injured. In September 2014, the Islamic state of Iraq and Levant and former Iraqi Al Qaeda rose. In addition to dominating the majority of Syria in the western and eastern part of Iraq, the Islamic state also has the first three journalists, two Americans and one British. . These incidents led to major military attacks by the United States and its regional allies.