First we hear of some Galilaeans who were murdered while offering sacrifices so that their own blood was mingled with that of their sacrifice. Pilate had ordered this horrible action. The next event is mentioned in verse four. Eighteen men were killed in an accident when a tower fell upon them. This is a common occurence.
Men die in a construction accident.
Then the Lord repeats His warning about the need for repentance. There is emotional and physical suffering. There is the suffering of famine, hunger, and disease. All suffering is the result of sin. If it is not the result of personal sin, then it is the result of the fact of sin.