What hairstyle became popular in one of the Rastafarian cultures in 20th century?

Rastafari movement dreadlocks are symbolic of the Lion of Judah which is sometimes centered on the Ethiopian flag. Rastafari hold that Haile Selassie is a direct descendant of King Solomon and the Queen of Sheba, through their son Menelik I. Their dreadlocks were inspired by the Nazarites of the Bible. Haile Selassie was crowned Emperor of Ethiopia in 1930. Many Jamaican Rastafarians claimed that Selassie's coronation was evidence that he was the black messiah that they believed was prophesied in the Book of Revelation. Some street preachers such as Leonard Howell, Archibald Dunkley, Robert Hinds, and Joseph Hibbert began to claim that "Haile Selassie was the returned Jesus". During the Great Depression in the 1930s, the Rastafari message spread from Kingston to the rest of Jamaica, especially among poor communities.

The cultivation of dreadlocks in the later Rastafari movement established a closer connection between like-minded people.

When reggae music, which espoused Rastafarian ideals, gained popularity and mainstream acceptance in the 1970s, thanks to Bob Marley's music and cultural influence, dreadlocks (often called "dreads") became a notable fashion statement worldwide, and have been worn by prominent authors, actors, athletes and rappers.