in the right, be

Idioms  

1. Have the support of fact, justice, or reason. For example, Nancy's parents were in the right when they took her teacher to task, or, as Shakespeare put it in Richard III (5:3): “He was in the right, and so indeed it is.” [Late 1400s] Also see the antonym in the wrong.

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Example Sentences

“There is the Glucksmann who was right and the Glucksmann who could — with the same fervor, the same feeling of being in the right — be wrong,” Mr. Lévy wrote in a posthumous appreciation for Le Monde.

From New York Times