Enormity

noun

1. Deviation from what is normal or standard; irregularity, abnormality.
2. Deviation from moral normality; extreme wickedness, nefariousness, or cruelty.

   "Not until the war ended and journalists were able to enter Cambodia did the world really become aware of the enormity of Pol Pot’s oppression."

3. A breach of law or morality; a transgression, an act of evil or wickedness.
4. Great size; enormousness, hugeness, immenseness.