A woman waits to hear about her sister, a teacher, following a shooting at the Sandy Hook Elementary School in Newtown, Connecticut. A man killed his mother at their home and then opened fire inside the elementary school where she taught, massacring 26 people, including 20 children, as youngsters cowered in fear to the sound of gunshots reverberating through the building and screams echoing over the intercom. (Photo by Jessica Hill/Associated Press)

A wheelbarrow loaded with two butchered pigs is seen at La Saline slaughterhouse in Port-au-Prince, Haiti, March 19, 2015. Reuters photographer Andres Martinez Casares: “The grunts of a pig or the bleating of a goat are one thing. Then there's the sound of animals about to be killed. That's something else. If you haven't heard that before, it's quite something... (Photo by Andres Martinez Casares/Reuters)

A monument to the character of Darth Vader from "Star Wars", which was rebuilt from a statue of Soviet state founder Vladimir Lenin, is seen in Odessa, Ukraine, October 23, 2015. The Internet Party of Ukraine's main candidate, a person named for the legendary "Star Wars" villain Darth Vader, campaigned in Odessa, cruising through town on a black van to the sound of Imperial March from "Star Wars" saga. (Photo by Yevgeny Volokin/Reuters)

Revellers dance at Notting Hill Carnival on August 29, 2016 in London, England. The Notting Hill Carnival, which has taken place annually since 1964, is expected to attract over a million people. The two-day event, started by members of the Afro-Caribbean community, sees costumed performers take to the streets in a parade and dozens of sound systems set up around the Notting Hill streets. (Photo by Jack Taylor/Getty Images)

People experience INTO SIGHT, a large-scale installation by Sony Design, where audience behaviour influences the visuals and soundscape in London on 16 September 2022. It combines Sony's Crystal LED display systems, which recently replaced green screen technology in one of the biggest developments in film production, with generative sound, see-through glass walls and mirrors. (Photo by Stephen Chung/Alamy Live News)

Fans dressed as movie Star Wars characters pose as they cerebrate the Star Wars Day in Taipei, Taiwan, Wednesday, May 4, 2016. May 4 is known as Star Wars Day among fans worldwide since the date sounds phonetically similar to the franchise's slogan, “May the Force Be With You”. (Photo by Chiang Ying-ying/AP Photo)