Take a warm wet wash cloth and wipe their little anuses with it. This should do the trick. (Mom actually licks them there to get them going...YUCKO!.).
If they haven't been fed well, they could go about 24 hours without going. After that, definitely ask a vet's advice. Make sure you're wiping down the belly and over the anus area, not just down the belly, and make sure you're stimulating imitates about the speed that a mama cat grooms babies.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.