they're the ones who
Did they do this to you?
C'est eux qui m'ont sauté dessus.
They were the ones who jumped on me.
They did it.
C'est eux qui me vendent, et pas l'inverse.
They're the ones selling to me, not the other way around.
— Le Loup de Wall Street (2013)
They were the ones who came up with the idea.
C'est eux qui seront notre armée.
They will be our army.