You worked four years for your bachelor's? Black people worked 60 years for their masters.
Do you think that's funny? Is that supposed to be about black people and slavery?
Of course black people are slaves, you see it in the past.
Slavery is an awful part of our history and affect people even today. Making jokes about it can be hurtful. You should consider learning more about black history from books so that you can understand why those jokes can be hurtful.
You are just a slave. Everyone should be a slave.
That is very backwards thinking and leads to discrimination of black people. Look at information to see how bad slavery was.