Why do i hate germans so much?

m grandfather told stories of the war when i was young. the medals he obtained when he fought during the defense of stalingrad and moscow. he also told me of his favorite medal the medal o victory over germany. he taught me germans were inhuman scum that deserved to die. although i never believed him. he spent three years training me to be a soldier in the next war. now i realized that i hated them. i don't know why i feel this way i never really listened to my grandfather, and really didn't care what he said