Bowl cut

[1] It is named so because in medieval times, when it was popular in Europe, a bowl would be placed on the head and then used as a cutting guide to trim the hair.

Indeed, it was done by putting a cooking pot of a fit size to the level of ears, and all hair below the rim was cut or shaved off.

In other cultures the bowl cut was viewed as an attribute of poverty, signifying that the wearer could not afford to visit a barber.

[3][4][5] By 2015, the hairstyle was uncommon enough that its use by mass murderer Dylann Roof was considered mildly noteworthy.

[6] For example, a neo-Nazi group named itself the "Bowl Patrol" after Roof's bowl cut hairstyle; that group remained active as of a July 2020 exposé in the Huffington Post, five years after Roof's Charleston church shooting.