Every liberal does it too, from center right radlibs to far-right "conservatives": the most extreme right fringe liberals hate the mainstream liberals for not being bigoted enough, the mainstream libs hate the radlibs for not being cruel enough, and the radlibs hate the left for not being chauvinist enough.
Denouncing chauvinism in particular is like a liberal moral event horizon, a cardinal sin against their self-interested belief in the righteousness of the imperial hegemon that keeps the treats flowing at gunpoint.
They would not need to justify starving children unless they knew starving children was wrong. Compare libs to reactionaries here: the latter will openly say "yeah kill all them [slurs], I don't care" at the drop of a hat, even when we aren't at war with one of the Bad Countries. You need to bombard libs with endless propaganda for months before they come close to that.
I'm also not sure that propaganda justifies horrors like starving children so much as it diverts blame. Ask a lib if food shortages in the DPRK are the result of sanctions and they won't tell you it's sadly necessary, they'll tell you we don't sanction food, so if people are hungry they should blame it on their government.
It's only propaganda external to their frame of reference; internally it's nuance. The whole point of ideology in the Zizekian meme sense is that it's invisible and totalizing from within the system, and only becomes apparent when one ideology is replaced by another, which is why we can see it for the propaganda that it is (at least from our frame of reference).