[Suicide Junkie]

I research Urban Pacification Centers very early on. In fact there are times I wish the stock happiness modifiers were multiples of 20% not 10% (i.e. jubilant gives you 40% - as it was in SE3) And yes, I know the figures can be modded.

I don't think it worked that way in SE3...
The mood of the population was unimportant until they started rioting.
You could force them to work at 140% whenever you wanted, and they would simply get angrier.