Kotowaza of the day: Vengeance at a distance

Japanese:

江戸の敵を長崎で討つ

Romanized:

Edo no kataki wo nagasaki de utsu

Meaning of Japanese:

To get revenge in Nagasaki for a wrong received in edo

English equivalent:

To take revenge in a roundabout fashion (or in an unlikely place)
To have the wrong sow by the ear