Across the world, huge numbers of people have come together to express their sadness and anger at the mass shooting at a gay club in Orlando, Florida. Rainbow flags, representing the diversity of the LGBT community, were draped over shoulders, projected onto landmarks and held up as placards, many bearing messages of unity and defiance.

Orlando shooting gay rainbow flag
A man holds a poster depicting a rainbow flag with the message: 'This is not a white flag' as he attends a vigil in Hong KongAnthony Wallace/AFP
Orlando shooting gay rainbow flag
Dominique Hernandez displays her rainbow-coloured fist, with a heart painted on her pulse, during a vigil at Los Angeles City HallFrederic J Brown/AFP
Orlando shooting gay rainbow flag
The buildings on the Brussels' Grand Place are lit up in the colours of the rainbow flag in support of the victims of the Orlando shootingsSiska Gremmelprez/AFP

The Eiffel Tower was lit up in the colours of the rainbow flag in support of those killed at the Pulse club. Parisians said the news of the Orlando shooting brought back terrible memories of the killings in the Bataclan concert hall in Paris last November, when gunmen opened fire during a show and killed dozens.

Orlando shooting gay vigils
The Eiffel Tower in Paris is illuminated in the colours of the rainbow flag in memory of the victims of the gay nightclub mass shooting in OrlandoGonzalo Fuentes/Reuters
Orlando shooting gay rainbow flag
A rainbow flag is draped over a sculpture near the Eiffel Tower in ParisMatthieu Alexandre/AFP

Thousands of people gathered outside Orlando's main performing arts venue, which was illuminated in the colours of the rainbow. Mourners created a makeshift memorial of flowers, candles and notes for the victims. The names of the dead were read aloud.

Orlando shooting gay rainbow flag
People gather for a candlelight vigil in Orlando, Florida during a memorial service for the victims of the shooting at the Pulse gay nightclubCarlo Allegri/Reuters
Orlando shooting gay rainbow flag
Nicole Edwards and her wife Kellie Edwards observe a moment of silence during a vigil outside the Dr Phillips Centre for the Performing Arts in Orlando, FloridaBrendan Smialowski/AFP
Orlando shooting gay rainbow flag
Men, draped in a rainbow flag, embrace ahead of a candle-lit vigil in Orlando, FloridaAdrees Latif/Reuters
Orlando shooting gay rainbow flag
A tag on a bouquet of flowers is seen at a makeshift memorial to the victims of the massacre in the Pulse gay nightclub in Orlando, FloridaCarlo Allegri/Reuters
Orlando shooting gay rainbow flag
Ten-year-old twins Erica and Olivia Hartley place lit candles near a large rainbow ribbon after a vigil in Orlando, FloridaAdrees Latif/Reuters
Orlando shooting gay rainbow flag
Carlos Diaz, with his arm painted in the colours of a rainbow, raises a candle in Orlando, Florida, in memory of victims of the mass shooting at the Pulse gay nightclub in the cityAdrees Latif/Reuters
Orlando shooting gay rainbow flag
A friend of Amanda Alvear, who died at the Pulse gay nightclub, holds up her photo at a memorial service in Orlando, FloridaCarlo Allegri/Reuters
Orlando shooting gay rainbow flag
People hold candles during a memorial service in Orlando, FloridaJoe Raedle/Getty Images

Thousands of Londoners gathered for a vigil near the Admiral Duncan pub, where three people died and dozens were wounded in a 1999 bomb attack by a far-right extremist. Mourners observed two minutes' silence, before 49 balloons – one for each person killed in the Orlando attack – were released into the air.

Orlando shooting gay rainbow flag
A woman holds a placard during a vigil outside the Admiral Duncan pub on Old Compton Street in Soho, LondonJack Taylor/Getty Images
Orlando shooting gay rainbow flag
Candles, flowers, rainbow flags, messages of support and photos of victims are placed at St Anne's Church in the Soho, LondonDylan Martinez/Reuters
Orlando shooting gay rainbow flag
People light candles during a vigil at St Anne's church in the Soho district of LondonDylan Martinez/Reuters

In this gallery, we look at how the world has shown its grief and solidarity with a huge display of rainbow flags and illuminations.

Orlando shooting gay rainbow flag
Liverpool's St Georges Hall is illuminated in the colours of the rainbow flag following a vigil in memory of the victims of the gay nightclub mass shooting in OrlandoPhil Noble/Reuters
Orlando shooting gay rainbow flag
Steam rises from the street as the spire of New York's One World Trade Center, also known as the Freedom Tower, is lit in rainbow colours to honour the victims of the Orlando shootingAndrew Kelly/Reuters
Orlando shooting gay rainbow flag
Stephen Flowers and Nick Bazo, originally from Orlando and now living in Boston, hold a photo of their friends Drew Leinonen and Juan Guerrero, both killed in the Orlando's Pulse nightclub attack, at Boston's City Hall's PlazaGretchen Ertl/Reuters
Orlando shooting gay rainbow flag
A sign reading 'Boston stands with Orlando' is placed on a wall at Boston's City HallGretchen Ertl/Reuters
Orlando shooting gay rainbow flag
People attend a candlelight vigil at the US Embassy in Bangkok, ThailandAthit Perawongmetha/Reuters
Orlando shooting gay rainbow flag
People gather at a vigil in solidarity for the victims of the Orlando nightclub mass shooting at Taylor Square in Sydney, AustraliaDan Himbrechts/Reuters
Orlando shooting gay rainbow flag
San Francisco City Hall is lit up in the colours of the rainbow flag during a candlelight vigil for the victims of the Orlando attackBeck Dieffenbach/Reuters
Orlando shooting gay rainbow flag
A candle and a rainbow flag are held up during a vigil in front of the White House in Washington, DCJoshua Roberts/Reuters
Orlando shooting gay rainbow flag
People stand in front of the Royal Palace at Dam Square in Amsterdam as it is illuminated in rainbow colours to pay homage to the victims of a shooting at a gay nighclub in OrlandoEvert Elzinga/AFP
Orlando shooting gay rainbow flag
A mourner lights candles placed on a rainbow flag draped with a black ribbon outside Barcelona's city hallJosep Lago/AFP
Orlando shooting gay rainbow flag
Flowers are placed on a rainbow flag in Seoul, South KoreaChung Sung-Jun/Getty Images
Orlando shooting gay rainbow flag
The Sydney Harbour Bridge is illuminated with rainbow colours to remember victims of the Orlando night club massacreDaniel Munoz/Getty Images
Orlando shooting gay rainbow flag
A man holds a poster displaying a ribbon in the colours of the rainbow and the US flag as people take part in a candlelight vigil in Hong KongAnthony Kwan/Getty Images
Orlando shooting gay rainbow flag
White roses and rainbow flags are displayed in front of the US embassy in BerlinJohn MacDougall/AFP
Orlando shooting gay rainbow flag
A rainbow flag flies at half mast on the Space Needle in Seattle, WashingtonOmar Torres/AFP
Orlando shooting gay rainbow flag
People gather during a vigil in Seoul, South Korea, to remember victims of the shooting at an Orlando nightclubChung Sung-Jun/Getty Images
orlando rainbow flag
University of the Philippines students pay tribute to those killed in the Pulse nightclub mass shooting in Orlando, during a protest at the school campus in Quezon city, Metro ManilaErik de Castro/Reuters