This is storm in a water jar.
It's non pornographic nudity we're talking about. It's not going to harm anyone, just the notion that it would is way more offensive than those images. On the other hand, the quick and dirty fix is just to shade all the scans into dark silhouettes. It'll still feel like you're intruding on the immigrants' privacy and you'll still have something to try and judge their gender from. So it's a silly thing to get worked up about.