OOC: You do know that I-S has secret police (at least he's RPd them in the past), that Xyrael has secret police, and that Ryazania (whose nation is defunct) had secret police, don't you, Delfos? It's not like they're new.
IC: Oh, and Federation citizens feel safer when their own government is placing them under surveillence, when they can be disappeared at any time for holding an opinion contrary to Alia's, when they might be murdered in the dead of night by a supposedly democratic state? Apparantly Canadian citizens have a strange mutation that turns the fear response on its head.
A secret police, as I've explained to you earlier and you don't seem to understand, is a totally internal arm of the government. It does nothing to secure the country from foreign foes, nothing to gather intelligence, nothing, in other words, to ensure national security. It exists for one purpose and one purpose only; to crush liberty.
You could argue that suppression of dissent leads to greater national cohesion and power, but that is an extraordinarily weak and easily refuted argument. Citizens under surveillence are not happy. They slow down on the job, decreasing GDP. Morale in the armed forces falls, decreasing fighting effectiveness. Democratic government becomes a sham, decreasing the political efficacy of citizens, and decreasing their support for government of any sort.