1. The Aristocrats.
2. I would rule with an iron fist, I would tell them to procreate constantly so we can engage in sadistic ritual torture of babies every day. We would also skin and cook them alive. There would be absolute gender equality and all children would be slaves until the age of 10. The children who would live to 10 would be hardened killing machines delighting in both sadism and masochism (most would be tortured to death)
3. Capture them and torture them to death. If needed, turn them into child making factories so we have more meat to torture.

Duct tape, loads of duct tape, a bunch of lighters, a couple flashlights and some rope. A gun, if I had one. Oh, and let's grab a laptop with some backup power source, maybe solar... just so I can show them all the fun torture methods internet perverts have come up with ;p Tribal toddlers torture by ants.

Ok, I wouldn't, but this set of options amuses me.