Unilever's Dove brand is in trouble, again, for insensitive advertising. This time it is harder to see the image choices as being an unfortunate accident.
Let's start with the 2011 ad. That showed large swatches to demonstrate how people could improve their skin. The three models standing in front of it were progressively more light skinned moving from left to right - from the unwashed to the washed skin. The placement sequence may not have been conscious.
But the 2017 ad plainly shows people changing ethnicity by removing items of clothing. That would be, well, odd, for a clothing brand, but Dove is a soap brand, and there's therefore an implication of associating darker skin with being unclean.