Matthew 6:3
But when thou doest alms, let not thy left hand know what thy right hand doeth.
Christ sits on the "right hand" of God the Father in heaven.
Matthew 25:33
And he shall set the sheep on his right hand, but the goats on the left.
And I believe of the two thieves….the one that would "see Him in paradise" was on his right side. Right vs left is important to their symbology.
They hate God.