This shows cruelty because the Jews didn't get to eat because the nazi's straved them. (boy in the striped Pj's)
This shows cruelty because the Jews got gassed and they got tricked by the Nazi's because the Nazi's got told they were having a shower. This is a similar connection because the Jews both died in the movies
This can show cruelty because the jews were forced onto the busses/trucks and were taken away from their family and friends.