Radioactive toys
In the 1950s, radiation was treated as quite a safe thing. Such “atomic” toys as the mini-laboratory depicted in the picture were really popular. The set for experiments included real polonium and uranium in small quantities.
Human zoos
Human zoos aimed to show people from Asia and Africa as “proof” of Darwin’s theory. Such shameful entertainment existed for many years. In the picture, you can see a Belgian human zoo in 1958