Here's your weekly digest of photographs that prove that it's a mad, mad, mad world!
A participant holds flowers as she takes part in the Color Run in the Andalusian capital of Seville. The Color Run is a 5-kilometre race, held in cities across the US and also worldwide, with the aim of promoting healthy living and to benefit a charity that organisers choose in each of the cities that the run visits. Participants are doused from head to toe in different colours at each kilometre. Photograph: Marcelo del Pozo/Reuters
A girl takes a photo for a friend who is sitting on the lap of a statue at the Japanese garden in Helwan. Photograph: Asmaa Waguih/Reuters
A participant dressed in a 'Dia de los Muertos' (Day of the Dead) theme poses for a portrait during the Village Halloween Parade in the Manhattan borough of New York October. Photograph: Carlo Allegri/Reuters
Participants take part in the Village Halloween Parade in the Manhattan borough of New York. Photograph: Carlo Allegri/Reuters
A participant in the Village Halloween Parade dressed as the Mona Lisa waits to ride the subway after the parade in the Manhattan borough of New York. Photograph: Carlo Allegri/Reuters
Children try to reach big soap bubble blown by Gunnar Jauch (not seen) during sunny autumn weather at a square in front of the opera house in Zurich. Photograph: Arnd Wiegmann/Reuters.
A model presents a creation at the 20th Salon du Chocolat, (Paris Chocolate Show) in Paris. Photograph: Gonzalo Fuentes/Reuters.
A child takes a sip of her drink as she is pulled along 14th Street in a folding shopping cart in New York. Photograph: Carlo Allegri/Reuters
An employee of Technical Antiques Team Breker adjusts the head of a contemporary Musical Automaton depicting Russian President Vladimir Putin, in Cologne. Inspired by Gustave Vichy's automaton "Pierrot Ecrivain" of 1895, French artist Christian Baily of Paris portrays Putin signing the "Treaty of Acceptance of the Republic Crimea into the Russian Federation". Putin is portrayed with blue glass eyes and molded hair, seated at a rosewood writing desk in a blue wool suit, spotted tie and hand-sewn leather shoes, with single-air going-barrel movement in body. The figure's movements are accompanied by a traditional Russian waltz. Photograph: Wolfgang Rattay/Reuters.
Participants descend a hill on a homemade cart during the 25th Roller Cart Festival in Medellin. Photograph: Fredy Builes/Reuters
Participants in zombie make-up dance to late US singer Michael Jackson's "Thriller", during a "Zombie Zumba Dance" event in Malabon city, north of Manila. The city said the dance event, in conjunction with the Halloween season, is part of its promotion on healthy lifestyle. Photograph: Romeo Ranoco/Reuters
A competitor participates in the Tough Mudder challenge near Winchester in southern England. Photograph: Luke MacGregor/Reuters.
Tan Yong finishes diving his home-made submarine at a lake in Dangjiangkou, Hubei province. Tan, a 44-year-old farmer, spent five months building the submarine, which weighed more than 1,000 kilograms, and successfully dived it to a depth of around 10 metres. The characters translate into the name of the submarine, "Xiyangyang". Photograph: Reuters