Try to think of something advanced but theoretically possible that would rapidly proliferate. No weapons.
My first thought was some kind of farm tech leading to a second agricultural revolution, allowing AES countries to thrive despite sanctions. Some leap forward in permaculture or vertical farms or whatever.
Another idea was a breakthrough in cryptography makings comms be completely anonymous, giving insurgent movements a more even playing field.
A propaganda detector
accidently brought my propaganda detector into the bathroom again and cowered beneath the sink as the deafening screech echoed off the hard tile
(they have signs telling me to wash my hands)
Oh shit