Your comment:”I find that too many people concentrate on the acts of mercy but forget about Justice. Mercy cannot rob justice.”
God is the Judge, not us. God also has Divine Mercy.
We are asked to do God’s will and part of that as Msgr. Pope has said is for us to to do works of spiritual mercy.
While we are alive Christ is perfect mercy and waits for us to come to him.
At the moment of our death Christ is perfect justice.
You are right; don’t forget the justice part!