Objective Morality must mean we always agree about everything, right?

The Digital Cuttlefish has a brilliant short verse regarding the 20/20 hindsight of morality:

When we ask the loaded questions, “What is moral? What is good?”
“Are there independent standards, what we shan’t and what we should?”
As the most successful culture, it should fill us with delight—
We will always look behind us, saying what we did was right

There's more at the link.