Very sad picture of hungry children  - made with crayons carbon.

This drawing was created in 1921 by Käthe Kollwitz as part of the artistic assistance of International Labor Aid (IAH). IAH appeared as an aid organization that collected money and food for starving Russia. The subgroup formed Künstlerhilfe, which supported IAH activities with posters, postcards, lectures and exhibitions. I'm not sure what period this picture is from probably this is one of her work copy.

There are not any signature or date but we find info this was one of drawings of Käthe Kollwitz.

https://en.wikipedia.org/wiki/K%C3%A4the_Kollwitz