To put it simply; Romeo and Juliet is neither about Romeo or Juliet, but rather the absolutely pointless feud which is between their two families. Many people today still fight over grudges which have long been forgotten or rendered obsolete-- it won't be hard to think of a few (hint: politics).
The newly created nazi ghettos were built where? in traditionally jewish neighborhoods. in rural areas. in poor urban areas. in isolated areas to prevent knowledge of the ghettos. primarily in germany.