Schadenfreude is the joy or pleasure derived from the misfortunes of others. What is the word for the feeling of discomfort derived from witnessing the misfortunes of others?
Compassion: "sympathetic consciousness of others' distress together with a desire to alleviate it".
Commiseration: a feeling of sympathy and sorrow for the misfortunes of others
I think there is a subtle difference between commiseration and compassion, where commiseration involves actually feeling miserable along with the other person while compassion aims more toward the desire to alleviate it.