Badger European capital to change from right to left (6)

I believe the answer is:

plague

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'badger' is the definition.
(I know that badger is a more specific form of the action bedevil)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for plague that I've seen before include "Widespread, contagious and destructive disease" , "Afflict" , "Fast-spreading disease" , "Pestilential epidemic" , "Destructive, highly contagious disease" .)

I've seen this clue in the Sydney Morning Herald.

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