Answer:
The slab with the communism symbol and the man reaching out his hand
Step-by-step explanation:
The man is extending his palm to accept money, and in communism the belief is that everyone is paid according to their abilities and needs. The man is also holding a whip, possibly signifying that if his demands aren't filled he will resort to violence. The symbol of communism that the man is displaying is also a very clear indicator of how the Germans feel about Jewish people.