U.S. President Barack Obama and Vice President Joe Biden place flowers at a memorial Thursday, June 16, for the victims of the nightclub shooting in Orlando. At least 49 people <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2016%2F06%2F12%2Fus%2Fgallery%2Forlando-shooting%2Findex.html" target="_blank">were killed in the massacre,</a> the deadliest mass shooting in U.S. history.
U.S. President Barack Obama and Vice President Joe Biden place flowers at a memorial Thursday, June 16, for the victims of the nightclub shooting in Orlando. At least 49 people were killed in the massacre, the deadliest mass shooting in U.S. history.
Pablo Martinez Monsivais/AP
People remember the victims during a vigil at an LGBT community center in San Juan, Puerto Rico, on Tuesday, June 14.
People remember the victims during a vigil at an LGBT community center in San Juan, Puerto Rico, on Tuesday, June 14.
Carlos Giusti/AP
Jean Dasilva, left, is comforted by Felipe Soto as they mourn the loss of their friend Javier Jorge-Reyes on June 14. They were visiting a makeshift memorial at Pulse, the gay nightclub where the shooting took place.
Jean Dasilva, left, is comforted by Felipe Soto as they mourn the loss of their friend Javier Jorge-Reyes on June 14. They were visiting a makeshift memorial at Pulse, the gay nightclub where the shooting took place.
David Goldman/AP
Britain's Prince William and his wife, Catherine, sign a book of condolences at the U.S. Embassy in London on June 14.
Britain's Prince William and his wife, Catherine, sign a book of condolences at the U.S. Embassy in London on June 14.
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A vigil for the Orlando victims is held in New Delhi on June 14.
A vigil for the Orlando victims is held in New Delhi on June 14.
Omar Khan/CNN
Thousands gather in Orlando on Monday, June 13, to pay tribute to those who were killed the day before.
Thousands gather in Orlando on Monday, June 13, to pay tribute to those who were killed the day before.
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The Eiffel Tower in Paris is illuminated in rainbow colors on June 13.
The Eiffel Tower in Paris is illuminated in rainbow colors on June 13.
EVERT ELZINGA/AFP/Getty Images
A woman lights a candle during a vigil in Sydney on June 13.
A woman lights a candle during a vigil in Sydney on June 13.
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Runners pass under half-staff flags at the Washington Monument on June 13.
Runners pass under half-staff flags at the Washington Monument on June 13.
J. David Ake/AP
U.S. Ambassador to Thailand Glyn T. Davies, right, gestures to members of the LGBT community outside the U.S. Embassy in Bangkok, Thailand, on June 13. They were holding a vigil for the victims.
U.S. Ambassador to Thailand Glyn T. Davies, right, gestures to members of the LGBT community outside the U.S. Embassy in Bangkok, Thailand, on June 13. They were holding a vigil for the victims.
Lillian Suwanrumpha/AFP/Getty Images
Students in Mumbai, India, light candles near a rangoli, an Indian form of art created on the ground, on June 13.
Students in Mumbai, India, light candles near a rangoli, an Indian form of art created on the ground, on June 13.
PUNIT PARANJPE/AFP/AFP/Getty Images
White roses and rainbow flags are displayed in front of the U.S. Embassy in Berlin on June 13.
White roses and rainbow flags are displayed in front of the U.S. Embassy in Berlin on June 13.
JOHN MACDOUGALL/AFP/Getty Images
People gather for a vigil in Seoul, South Korea, on June 13.
People gather for a vigil in Seoul, South Korea, on June 13.
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The city of Melbourne posted this image on its Twitter account June 13 "as a mark of respect for those touched by the attack in Orlando. Town Hall is lit in the rainbow #LoveIsLove."
The city of Melbourne posted this image on its Twitter account June 13 "as a mark of respect for those touched by the attack in Orlando. Town Hall is lit in the rainbow #LoveIsLove."
From Twitter @cityofmelbourne
Mourners hold an LED sign as they march during a vigil in Dallas on Sunday, June 12.
Mourners hold an LED sign as they march during a vigil in Dallas on Sunday, June 12.
LAURA BUCKMAN/AFP/Getty Images
Lin-Manuel Miranda, creator of the musical "Hamilton," delivers a sonnet at the Tony Awards to pay tribute to the Orlando victims.
Lin-Manuel Miranda, creator of the musical "Hamilton," delivers a sonnet at the Tony Awards to pay tribute to the Orlando victims.
Evan Agostini/Invision/AP
A rainbow flag flies at half-staff on the Space Needle in Seattle on June 12.
A rainbow flag flies at half-staff on the Space Needle in Seattle on June 12.
OMAR TORRES/AFP/AFP/Getty Images
Henry Duong pays tribute during a memorial service in San Diego.
Henry Duong pays tribute during a memorial service in San Diego.
SANDY HUFFAKER/AFP/AFP/Getty Images
One World Trade Center is lit in rainbow colors June 12 in New York.
One World Trade Center is lit in rainbow colors June 12 in New York.
BRYAN R. SMITH/AFP/AFP/Getty Images
Mourners hold up signs during a vigil in Washington on June 12.
Mourners hold up signs during a vigil in Washington on June 12.
ANDREW CABALLERO-REYNOLDS/AFP/Getty Images
Mourners gather during a vigil in front of the White House on June 12. President Barack Obama called the mass shooting an "act of terror" in remarks to the nation.
Mourners gather during a vigil in front of the White House on June 12. President Barack Obama called the mass shooting an "act of terror" in remarks to the nation.
ANDREW CABALLERO-REYNOLDS/AFP/Getty Images
Two women light candles during a vigil in front of the U.S. Embassy in Santiago, Chile, on June 12.
Two women light candles during a vigil in front of the U.S. Embassy in Santiago, Chile, on June 12.
Esteban Felix/AP
Mourners observe a moment of silence during a vigil in Atlanta.
Mourners observe a moment of silence during a vigil in Atlanta.
David Goldman/AP
Ryan Gibson, left, embraces Tabor Winstead during a vigil in Raleigh, North Carolina, on June 12.
Ryan Gibson, left, embraces Tabor Winstead during a vigil in Raleigh, North Carolina, on June 12.
Robert Willett/The News & Observer/AP
A man injured in the attack stands with other mourners as they attend a memorial service at an Orlando church.
A man injured in the attack stands with other mourners as they attend a memorial service at an Orlando church.
Joe Raedle/Getty Images
Participants in the Los Angeles gay pride parade show their support for the victims on June 12.
Participants in the Los Angeles gay pride parade show their support for the victims on June 12.
MARK RALSTON/AFP/Getty Images
People hold candles near Rome's Colosseum as they take part in a ceremony on June 12.
People hold candles near Rome's Colosseum as they take part in a ceremony on June 12.
ANDREAS SOLARO/AFP/Getty Images
A man places a handprint on a makeshift memorial near the nightclub where the attack took place.
A man places a handprint on a makeshift memorial near the nightclub where the attack took place.
MANDEL NGAN/AFP/Getty Images
People gather for a vigil June 12 outside the Stonewall Inn in New York. <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2016%2F05%2F09%2Ftravel%2Fstonewall-inn-nps-national-monument-gay-rights%2Findex.html" target="_blank">Stonewall</a> is considered the birthplace of the gay rights movement.
People gather for a vigil June 12 outside the Stonewall Inn in New York. Stonewall is considered the birthplace of the gay rights movement.
JUSTIN LANE/EPA
People gather in Sao Paulo, Brazil, to mourn the Orlando victims on June 12.
People gather in Sao Paulo, Brazil, to mourn the Orlando victims on June 12.
Cris Faga/Zuma Press
People gather for a vigil near the Beaubourg art center in Paris on June 12.
People gather for a vigil near the Beaubourg art center in Paris on June 12.
GEOFFROY VAN DER HASSELT/AFP/Getty Images
People line up to donate blood at a blood bank in Orlando.
People line up to donate blood at a blood bank in Orlando.
Xinhua/Sipa USA/Xinhua/Sipa USA
People show their support for Orlando during the Los Angeles gay pride parade.
People show their support for Orlando during the Los Angeles gay pride parade.
David Crane/AP
The Rev. Jeffrey Montoya leads a prayer in Greenfield, Wisconsin, on June 12.
The Rev. Jeffrey Montoya leads a prayer in Greenfield, Wisconsin, on June 12.
Michael Sears/Milwaukee Journal Sentinel/USA TODAY/Sipa