Authorities say they may be dealing with two hate crimes after offensive material was discovered at a family home and near a popular Adelaide beach.At Camden Park in Adelaide’s western suburbs, a father told 7NEWS his family has been left shaken after their home was defaced with swastikas and antisemitic messages.WATCH ABOVE: Police investigate suspected hate crime of a Adelaide Jewish familyKnow the news with the 7NEWS app: Download today ArrowPolice are now treating the graffiti as a suspected hate crime.Rosti Sverdlov told 7NEWS he had just stepped outside to walk his dog when he discovered the graffiti plastered across...