Children was seperated from theirs families because, Children was unfit to work and the parents did work. Childrens was killed either for being non aryan or unfit to work
Once the ban on emigration from Germany and German-controlled territory came into force (mid October 1941), there was virtually nothing that families could. As for 'community leaders', some of them...
It might be inappropriate to try to research your answer. However, there is a website which might have your answer. Try Yad Vashem, the Holocaust site. The link is given below.
It would destroy Jewish families, Gypsy families, people with homosextuals, and other types of people because the Nazi would murder them, take them to concentration camps, and tear families apart...