There is a huge difference between embarrassing individuals, and murdering children. There may be a small amount of comparison available here, but it shouldn't be considered an equal infraction.
This may even have been staged.
At any rate, most people don't tend to learn about what was done to newborns, infants, children, women and all kinds of humans by the Nazis. If they did, they would cry for a long time, and consider this wrapping of exposed men to a street sign as simple bad taste and stupidity.
Those children are minimized by the comparison.