The Pianist:
1) One of the first nights in the Ghetto, the German officers visit the Jewish families and one man is in a wheelchair and cannot stand to meet them. They take him outside and throw him over the balcony along with his wheelchair.
This scene is so memorable because it is so beyond terrible and absolutely unheard of in our society. It is the first scene in the film of terror and Jewish oppression.
2) At one point the German officers force the Jews to line up and randomly select a few people to lay down, face first, on the street. One officer then proceeds to shoot each one in the head. Upon reaching the last man, he runs out of bullets and the man is forced to wait as the officer reloads his gun.
This scene is very powerful because the when the last man realizes the officer has run out of bullets, visible hope dawns on his face, but it is quickly shut down as the officer slowly reloads his gun to finish the job.