Today in Pictures: July 28

Performers audition in Sydney, a Russian baptism and more images from around the world.

A high school student is detained during a protest for education reform in Santiago, Chile. Protesters' demands include free access to school for all ages, including university level. Esteban Felix / AP

Soldiers take part in army exercises against possible chemical attacks at the Mane Garrincha National Stadium, one of the venues for Olympic football ahead of the 2016 Rio Olympics in Brasilia, Brazil.

Pope Francis addresses the faithful during World Youth Days at Blonia Park in Krakow, Poland. KACPER PEMPEL / Reuters
An orthodox priest baptizes a woman in the Yenisei river during a ceremony marking the Christianization of the country, which was known as Kievan Rus' at the time, by its grand prince, Vladimir the Great in 988 AD, in Krasnoyarsk, Siberia, Russia. ILYA NAYMUSHIN / Reuters
Indian Hindu devotees light candles during "Aadi Kiruthigai" celebrations at Vadapazhni Murugan temple in Chennai. Aadi is considered a holy month by Tamils and is celebrated with rituals worshipping Hindu gods. ARUN SANKAR / AFP - Getty Images

Indonesian activists hold candles during a candlelight protest against death penalty executions, outside the presidential palace in Jakarta, Indonesia. The government is expected to execute 14 prisoners sentenced to death by firing squad on July 29.

Afghan refugee women wait to board trucks at the United Nations High Commissioner for Refugees repatriation center on the outskirts of Peshawar as they prepare to return to their home country after fleeing civil war and Taliban rule. Pakistan is home to 1.5 million registered refugees and about as many undocumented Afghan refugees, with growing insecurity in Afghanistan impeding voluntary return programs. A MAJEED / AFP - Getty Images
Auditioning performers follow resident choreographer Erik Sorensen at the Sydney Dance Company in a routine during castings in Moulin Rouge's current show "F?erie," in Sydney. The show's artistic team is in Australia to choose new talent to perform with one of the most famous cabarets that has been illuminating Paris since 1889. Rob Griffith / AP

A child climbs onto a giant mock-up laptop keyboard during a promotional event at a shopping center in Beijing.


A helicopter carries water to drop on the Soberanes Fire in Carmel Highlands, California, July 27.