[Berobero]

Iran has a shit regime (corollary: all countries' regimes are shit, just some more than others).

To your question, it's a matter of emphasis. You have a fundamentally greater moral imperative to criticize your own government (I assume you're not Iranian living in Iran) and its dealings/shortcomings simply because you can, in principle, actually have some relatively significant impact on its actions. So no, there is no need to ignore the conduct of the Iranian government, but if you place emphasis on it disproportional to what you actually have influence over, your moral priorities are fundamentally misplaced.