The victims were Serbs , Jews , and Roma , imprisoned on ` ethnic ' grounds , and significant numbers of Croats , imprisoned on the grounds that they were Partisan resistance members , or on the suspicion of taking part in anti-fascist activities .
The victims were Serbs , Jews , and Roma , imprisoned on ` ethnic ' grounds , and significant numbers of Croats , imprisoned on the grounds that they were Yugoslav Partisans resistance members , or on the suspicion of taking part in anti-fascist activities .