This comic is showing how slaves were treated. In the first one it's showing how they had to work alot and if they got off task they were yelled at or punished. They usually they didn't get much sleep and were always doing labor as well. In the second slide it's showing how cruel the white people were. The black people would get beaten and the white people would laugh or mock them about it because they didn't care about the black people's feelings. In the third slide it's showing how if they got off topic they would get beaten to death and the white's wouldn't even care. The black's are just mourning over their loss in the photo as well.
"get back to work!"
"Stop complaining before they see you."
"how many whips did they give you yesterday?"
"I can't believe they actually killed him for being late!"