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A girls covers her face with a rainbow flag as she attends the "Pregon" (official proclamation) of the WorldPride 2017 in Madrid on June 28, 2017. Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights. / AFP PHOTO / OSCAR DEL POZO (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

A girls covers her face with a rainbow flag as she attends the "Pregon" (official proclamation) of the WorldPride 2017 in Madrid on June 28, 2017.
Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights.  / AFP PHOTO / OSCAR DEL POZO        (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

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Picture shows Cibeles fountain illuminated with the rainbow colours in Madrid on June 28, 2017. Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights. / AFP PHOTO / OSCAR DEL POZO (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

Picture shows Cibeles fountain illuminated with the rainbow colours in Madrid on June 28, 2017.
Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights.  / AFP PHOTO / OSCAR DEL POZO        (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

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A couple wrapped in a rainbow flag kisses in Gran Via street after the "Pregon" (official proclamation) of the WorldPride 2017 in Madrid on June 28, 2017. Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights. / AFP PHOTO / OSCAR DEL POZO (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

A couple wrapped in a rainbow flag kisses in Gran Via street after the "Pregon" (official proclamation) of the WorldPride 2017 in Madrid on June 28, 2017.
Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights.  / AFP PHOTO / OSCAR DEL POZO        (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

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Revellers attend the "Pregon" (official proclamation) of the WorldPride 2017 in Madrid on June 28, 2017. Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights. / AFP PHOTO / OSCAR DEL POZO (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

Revellers attend the "Pregon" (official proclamation) of the WorldPride 2017 in Madrid on June 28, 2017.
Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights.  / AFP PHOTO / OSCAR DEL POZO        (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

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Argentinian multidisciplinary artist Topacio Fresh (2R) speaks beside Spanish actress Cayetana Guillen Cuervo (R), actor Pepon Nieto (4R)and Venezuelan screenwriter and showman Boris Izaguirre (5R) as they take part in the "Pregon" (official proclamation) of the WorldPride 2017 in Madrid on June 28, 2017. Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights. / AFP PHOTO / OSCAR DEL POZO (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)

Argentinian multidisciplinary artist Topacio Fresh (2R) speaks beside Spanish actress Cayetana Guillen Cuervo (R), actor Pepon Nieto (4R)and Venezuelan screenwriter and showman Boris Izaguirre (5R) as they take part in the "Pregon" (official proclamation) of the WorldPride 2017 in Madrid on June 28, 2017.
Thousands of revellers, many draped in rainbow flags, packed a Madrid square today for the official launch of WorldPride festivities, one of the biggest celebrations of lesbian, gay, bisexual and transgender rights.  / AFP PHOTO / OSCAR DEL POZO        (Photo credit should read OSCAR DEL POZO/AFP/Getty Images)