This Week in Pictures: October 20 - 26

Students at St Andrews University are covered in foam as they take part in the traditional "Raisin Weekend" on the Lower College Lawn, at St Andrews in Scotland.

One and a half thousand sheep were driven through the streets of the center of the Spanish capital. This unusual annual event is timed to the old holiday Fiesta de la Trashumancia. By means of this event, shepherds remind the authorities and residents of Madrid about the existence of a long-standing sheep breeding tradition in the country.

Mexicans get ready to celebrate the Day of the Dead, highlighting the character of La Catrina, which was created by cartoonist Jose Guadalupe Posada, famous for his drawings of typical local, folkloric scenes, socio-political criticism and for his illustrations of "skeletons" or skulls, including La Catrina.

A Honduran migrant heading in a caravan to the US prepares to jump into the Suchiate River from the Guatemala-Mexico border bridge, near Mexican Federal Police officers, in Ciudad Hidalgo, Chiapas State, Mexico. Thousands of migrants forced their way through Guatemala's northwestern border and flooded onto a bridge leading to Mexico, where riot police fought them back on October 20, waited at the border in the hope of continuing their journey to the United States.

Contestants wait for their performance backstage during the National Amateur Body Builders' Association competition in Tel Aviv, Israel. Some waited over eight hours for their chance to strut their stuff before the panel of judges.

Belarusian commandos during the qualification test for the right to wear a maroon beret at the training center of the internal troops of Belarus near Minsk. The exam includes running, an obstacle course, shooting, and martial arts.

Models present a creation by Amir Slama during the Sao Paulo Fashion Week in Sao Paulo, Brazil.

Saudi Arabia's Crown Prince Mohammed bin Salman poses for a selfie during the Future Investment Conference in Riyadh, Saudi Arabia.

Rescue workers at the site where a train derailed in Yilan County, Taiwan.

A man cries as he stands next to a burning funeral pyre for a family member who died after a commuter train traveling at high speed ran through a crowd of people on the rail tracks on Friday.

Small rocket ship "Burya" of Project 22800-class before launching at the Leningrad shipbuilding plant "Pella" in the Leningrad Region. The small rocket ship will be the third of a series of a new generation of the Project 22800. It is equipped with the latest weapons, including high-precision rocket weapons and artillery complexes.

Russian President Vladimir Putin on his way to a meeting with Italian Prime Minister Giuseppe Conte.

Young people at the Golitsyn pond in Gorky Central Park, Moscow, Russia.

A demonstrator takes part in a protest in favor of the reduction of the impact of plastic products on the environment, in front of the European Parliament in Strasbourg, France.

The beginning of the demolition of the unfinished hospital building on Klin Street in Hovrino, Moscow. According to the department of construction, four houses will be built at the site of the hospital at the city’s expense.

Week-old White Bengal tiger cubs at the Taigan Safari Park near Belogorsk, Crimea.

A participant races in the Brompton World Championship in Bern, Switzerland.

Women dance during a demonstration supporting Workers' Party presidential candidate Fernando Haddad and against the opposing candidate, Jair Bolsonaro of the right-wing Social Liberal Party, in Cinelandia square. The rallies took place one week before Brazilians return to the polls on Oct. 28 for the second round of voting.

People walk through a field of fireweed, or Kochia scoparia, in the Hitachi Seaside Park in Hitachinaka, Japan. Fireweed is a grass bush that takes on a bright red color during fall.

Vatanyu Yansri competes in Chonburi's annual buffalo racing festival in Chonburi province, Thailand.

The annual Gandrung Sewu festival attracts thousands of tourists to Banyuwangi on the eastern tip of Java.

The Hong Kong-Zhuhai-Macau Bridge is the world's longest cross-sea project, which has a total length of 55 kilometers (34 miles), had its opening ceremony in Zhuhai on Oct. 23.

Woman walks over a bridge in the city of Fez, Morocco.

Reenactors fight during a reenactment of the Battle of the Nations on the battle’s 205th anniversary near Leipzig, Germany.

A Roman amphitheater in the city of Bosra in the Syrian province of Daraa. It is one of the largest and most well-preserved Roman theaters in the world.

Afghan women wait in line to vote at a polling station for the country's legislative election in Herat province. Afghans braced for deadly violence on October 20 as voting got underway in the long-delayed legislative election, which the Taliban (banned in Russia) had vowed to attack.

Demonstrators clash with riot police outside the congress while Argentine deputies began the discussion on the government’s austere 2019 budget, in Buenos Aires.

People in a cafe on the roof of a house in the town of Chefchaouen, also known as Chaouen, Morocco.

A boy flies a kite with his friends along the dry riverbed of the Lyari River in Karachi, Pakistan.