Is the following an example of intentional or unintentional bias? *
"The mob attacked the group of soldiers. Some of the mob threw bricks, stones, pieces of ice, and snowballs at the soldiers. Others moved up to the soldiers’ bayonets, trying to use their clubs. People in the mob called out to the soldiers to fire their guns, and used insulting language. Captain Preston stood between the soldiers and the mob and tried to make peace by talking to them, asking them to leave. Some of the mob asked if he intended to order the soldiers to shoot at them. He answered, “Of course not. I am between you and the troops.” His words had no effect. Once of the soldiers, receiving a violent blow, fired his gun. Captain Preston turned around to see who had fired. He received a blow that was aimed at his head but missed and hit his arm."