By Dr. Mercola. Any type of traumatic injury, such as a fall, can cause capillaries (small blood vessels) near your skin's surface to break and leak red blood cells. This causes the reddish-purple or black and blue appearance of bruises on your skin.
In Act III, Scene I we learn that Macbeth has hired murderers to kill Banquo and his son. Macbeth does this because he realizes that Banquo poses a threat to Macbeth's rise in power. At the same time, Banquo loses trust in Macbeth but decides to fake his loyalty for safety.He also wonders if the witches' prophesy concerning his sons will actually come true, which puts them directly at odds with Macbeth.Banquo is murdered in Act III, Scene III. However Banquo's son escapes.When the murderers tell Macbeth that the plan was not completely successful Macbeth realizes that Fleance still is a threat but is happy that no other children will be born of Banquo.t the same time, Banquo loses trust in Macbeth but decides to fake his loyalty for safety. He also wonders if the witches' prophesy concerning his sons will actually come true, which puts them directly at odds with Macbeth. Banquo is murdered in Act III, Scene III.
But Macbeth has also not forgotten the witches' prediction for Banquo's heirs. Once Macbeth begins to steer his own destiny, he knows he cannot let Banquo stand in his way. Banquo is too much of a 'boy scout,' and honest men are dangerous to Macbeth.