Boston Marathon bombing

=== National reactions ===
[[File:President Obama speaks on explosions in Boston (2013-04-15).ogv|thumb|President Barack Obama's initial remarks after the attack]]

President [[Barack Obama]] addressed the nation after the attack.<ref name="AutoLC-137"/> He said that the perpetrators were still unknown, but that the government would "get to the bottom of this" and that those responsible "will feel the full weight of justice".<ref name="AutoLC-138"/> He ordered flags to half-staff until April 20 on all federal buildings as "a mark of respect for the victims of the senseless acts of violence perpetrated on April 15, 2013 in Boston, Massachusetts".<ref name="AutoLC-140"/>

Moments of silence were held at various events across the country, including at the openings of the [[New York Stock Exchange]], [[NASDAQ]], and [[New York Mercantile Exchange|NYMEX]] on the day after the bombing.<ref name="Mills" /> Numerous special events were held, including marathons and other runs.<ref name="AutoLC-142" /><ref name="AutoLC-143" /><ref>{{cite web|url=http://archive.freep.com/article/20130421/NEWS06/304210177/lansing-marathon-boston-bombing|title=Lansing Marathon runners hit the street to salute Boston|work=Detroit Free Press|access-date=April 8, 2015}}</ref><ref>{{cite web|url=http://www.onerunforboston.org|title=One Run For Boston 2|work=One Run for Boston|access-date=April 8, 2015}}</ref> Islamic organizations in the United States condemned the attacks.<ref>{{cite book|title=Muslims in America: Examining the Facts|author=[[Craig Considine (academic)]]|publisher=[[ABC-CLIO]]|date=2018-07-11|page=188}}</ref>

{{multiple image
 | width = 180px
 | align = left
 | image1 = Barack Obama briefed on the 2013 Boston Marathon explosions (1).jpg
 | caption1 = President Obama (in the Oval Office of the White House on April 15) taking a phone call from FBI Director Robert Mueller about the bombing 
 | alt1 =
 | image2 = Glendale, Arizona Remembers the 2013 Boston Marathon Bomb Casualties - panoramio (1).jpg
 | caption2 = Flags in [[Flagstaff, Arizona]] flying at [[half-staff]] on April 18
 | alt2 =
 | image3 = Moment of Silence for Boston Marathon Victims (8673228608) (1).jpg
 | caption3 =Connecticut Governor [[Dannel Malloy]] and others participate in a [[moment of silence]] outside of the [[Connecticut State Capitol]] on April 22 to honor the victims of the attack
 | alt3 =
}}
{{clear}}