These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Logic: The majority of the men in this society are a) armed and b) do not expect to have a chance at a woman — read: any legal sexual outlet whatsoever — unless they're really, really lucky because those government-run brothels are only for the high-ranking members of the government and foreign officials. Gilead shouldn't have lasted seven weeks, let alone seven years.
It's mentioned that some soldiers are hanged for "gender treachery" (i.e. turning to homosexual sex, probably due to this), but that just means a revolt should have been even likelier.
Harsher in Hindsight: The destruction of the government is blamed on Muslim terrorists initially, giving far-right forces an excuse to declare martial law, suspend the Constitution, and institute their own perverse version of fundamentalist Christianity.
"And why would God allow such a terrible thing to happen?"
"Teach her a lesson. Teach her a lesson. Teach her a lesson."
Now factor this in: they were talking about a 14-year old girl being gang-raped.
The Colonies. You really don't want to be sent there They're used for cleaning up nuclear waste until they die from the radiation poisoning. It's basically gulags. Also hinted is that "the Children of Ham" (black people), who are supposedly sent to "national homelands" (a la South Africa) may in fact be suffering extermination.
While we learn the (possible) fates of the black and Jewish populations, there is no mention of other ethnic or religious groups. What about the Asian, Middle Eastern, First Nation, etc, groups? We don't know, but we can imagine that it was horrifying.