See that? That was called Apartheid and it occurred in South Africa. Apartheid excluded Blacks from almost everywhere.
See that man in the middle, thats Nelson Mandela, he was the president of South Africa and tried to make everyone completely equal, but was put in jail for 27 years. Because people did not agree.
After Mandela was released, he still tried making the blacks lifes equal. Later for the first time everyone was able to vote for their president and Mandela was elected once again.
Whites still did not agree with ALL Mandela was saying, but the warmed up to most of it. Some things that changed, were the pledge. The new pledge included parts when whites were in charge and a new part where Mandela was in charged.
Now in 2018, Apartheid is now gone, Mandela ended it while he was in power. He died 5 years ago on March 5th, 2018. Now South Africa is equal and free.