Israel was created in 1948 under a British and American jurisdiction.
False. Israel was created by a vote of the United Nations, disposing of an inherited League of Nations mandate.
Part of the country of Palestine was renamed Israel...
Also false. There has never in history ever been a country called Palestine. For some reason you forgot to mention Jordan.
....and the Palestinian Arabs who lived there were removed from their homes and lands....
begs the question. Much historical debate over who ordered them out in what numbers and for what purpose.
Israel treats Arabs as second class citizens...
This is sadly so, but nothing whatever to do with the Palestinians who are not Israeli citizens. The Israeli Arabs, discriminated against by Netanyahu and his allies as never before, seem to have mysteriously appeared in the country after all the Arabs were driven out according to you. They include the Bedouin who are treated far worse in all Arab states, and Palestinian-Arab Christians who are being slowly erased under Fatah and Hamas rule. It is complicated.
Nothing like South Africa. Jews are indiginous people exiled then returned, including black Ethiopian Jews. Israeli Arabs are discriminated against but have access to independent courts under the rule of law, more than any Arab population gets anywhere else.
Now, in truth, the creation of the state of Israel was a cynical move made by governments that fully expected the infant to be strangled at birth by the armies of seven Arab nations who objected to partition not because they wanted more but because they wanted it all, and as the pro-Nazi Palestinian leaders of the day explained, wished to finish the job Hitler failed to complete. (Those wealthy Palestininan families who sold land to incoming Jews in the first place from under the feet of their Arab tenants, and who continue to dominate in the councils of Fatah.
Now just how come did that Seven Nation Army fail against a rag-bag of half-starved death-camp survivors? Because when you can answer that question, you will begin to have a handle on the whole godforesaken mess.