A video has emerged of a passenger on the London Underground brazenly responding “Why not?” when asked why he was wearing a blackface Halloween costume.

A woman told him: “It’s a bit racist that you put black make up on.” She went on to try and explain what the ethical problems were with wearing a Halloween costume like that but the man didn’t appear to see the issue.

A video of the incident, which took place on the Central Line, was posted on Twitter by another woman who says she is a make-up artist and a mother of one.

‘It’s 2018? How is this still happening?’ she asked.

The man and his female companion were apparently dressed as characters from Pulp Fiction, but appeared undeterred by other passenger’s protests.

A woman responded to the initial tweet saying: “His shrug of the shoulders and utter nonchalance with the woman next to him looking bemused is probably the most scary thing about this video #its2018 #WhitePrivilege”

Other people came to the stranger’s defence with one saying:

“Not sure why dressing up as a black celebrity is classed as racist, I’d not be offended if someone black whited up as a white celebrity, I think the problem is people being over sensitive, people tend to cry over everything and anything they can.”

Another added:

‘People dress in green on st Patrick’s day and act like leprechauns and you don’t get up in arms. If I want to be Jules Winnfield from pulp fiction why not. He’s badass, not cause I’m racist?’

One woman calling herself Black Avalanche tried to explain:

‘It’s not the fact that he is dressed up as someone black, it’s the fact he painted his face black. ‘Blackface was always used (by white people) as something negative. They would exaggerate our features and make fun of us. Dressing up, fine. Blackface, never acceptable.’

The man is yet to be identified.

Images via Twitter/@DOkoriko