If you kill 1,000,000 people, you're a respected historical figure

I heard someone loudly saying how Hitler was very respected at the end of the day in a public commuter today. Seems like:

If you kill 1 person, you're a murderer. Everyone else wants you hanged or locked-up.
If you kill 1000 people, you're a martyr who fought for a cause. Some will respect you and hold you as a hero.
If you kill 1,000,000 people, you're a respected historical figure.