If your name's Donald Trump Jr. and TV Series Archivesyou start tweeting about socialism, it's not going to go unnoticed.

SEE ALSO: Born-rich person Donald Trump Jr. uses his kid's Halloween candy to talk about socialism

On Halloween night, the president's eldest son decided to use his daughter to make a political point.

Here's the original, now widely-mocked tweet:

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A lot of people, like historian and author Kevin M. Kruse, pointed out the big flaw in Trump Jr.'s logic.

Then, on Wednesday morning, J.K. Rowling waded in:

If this were a wizarding dual, Donald Trump Jr. would just have been expelliarmus'd.

Hard.

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