Gnomes

From Wittypedia

A race of underground dwelling luddites, like shrunken amish they dwell beneath the surface biding their time until they can rise against us. They havent got a prayer of beating us though because they're tiny with no weapons of note, so don't panic! It is a common misconception (misconceptions are so common nowadays) that they all wear pointy hats, they don't. The stupid ones wear the dunce hat and are forced to the surface to go fishing or move wheelbarrows about, they are the lowest caste in gnome society.

They used to be humans until fleeing technology underground after the microphone incident, the weight of the soil and the lack of light and protein has miniturised them to such a degree they can pick locks by doing cartwheels. Some unscrupulous locksmiths keep hordes of gnomes in servitude for that very purpose. When they are too old to cartwheel they are killed by suffocating them in the airtight combination safes the locksmiths are having trouble selling.

If it werent for this mode of death gnomes live well over two hundred years, exercising daily and dieting upon worm husks and rabbit droppings. Whenever an item of high technology is placed before them, such as an automatic self-articulating leaf cleaner, they foam at the mouth until bright red faced their heads explode. The headless cadavers are then collected at night by their respectful brethren who hide their eyes from the offending technology using mud.