In Poland we celebrate a holiday called "zaduszki" and it is derieved from a pagan holiday called Dziady. People go to church to pray for the souls of their dead family members. Then they go to cemeteries to clean up graves. Dziady was a pagan slavic holiday in which people communicated with ghosts of their dead family and friends ,,dziady'.The purpose of this holiday was to help stray souls suffering in purgatory to get to heaven.