Why do white people get the blame for slavery when virtually every race in human history engaged in the slave trade?

Why do white people get the blame for slavery when white people were enslaved by Arabs?

Why do white people get the blame for slavery when they were the first in the world to legally end slavery?

Why do white people get the blame for slavery when white people risked their lives to help free black slaves from their Arab captors?

Why do white people get the blame for slavery when hundreds of thousands of white Americans died in a civil war partly to end slavery?

Why do white people get the blame for slavery when there are still 46 million people enslaved today – none of them in white countries?