One of the prominent members of the loose-knit alt-right movement in the US has been given a lesson from a very sassy historian in the UK.

Paul Joseph Watson, editor-at-large of alt-right conspiracy site Infowars, got a free educational tale on ancient Rome by English historian Mike Stuchbery.

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Watson posted a tweet slamming the BBC for portraying Roman Britain as ethnically diverse:

Let's just say that Stuchbery didn't spare words in his long, sassy reply:

He started off explaining why Roman Britain was actually very ethnically diverse:

There are several reports of "moors" along with (modern-day) Iraqi and Syrian soldiers on Hadrian's Wall, noted Stuchbery. Also, every camp in the province would have a settlement where wives, kids, slaves and tradespeople lived. Many of the inhabitants would travel with the legion, he added.

Governors deployed to Britannia would take slaves with them from anywhere in the Empire, Stuchbery added. And London was particularly diverse:

Stuchbery also reported that people from southern Mediterranean, North Africa, and Rome lived in Britain:

It seems that Paul Joseph Watson needs to go back to school to study history.

And Stuchbery got some well-earned praise from the undisputed Queen of Twitter, J. K. Rowling: