[Oggy ben Doggy]

OK, I mostly pounded a Methane breathing race to rubble, and captured a planet of theirs. Then I gleefully made a bunch of colonizing ships, and started colonizing Methane worlds (I breath oxygen)

Everything was fine and dandy but then they started rioting, first the conquored worlds, then the colonized ones? this is normal?

I know this has been said before, but if I build units, it'll calm them down? Some of the worlds are only angry, I'm trying to head them off before they riot.