To dream about a donkey suggests the side of you that is unmoving and unrelenting. You can't get along with others. If the donkey has died, then your devil-may-care attitude will cause you trouble with your moral fiber.
To dream that you are thrown from a donkey suggests that your love life will suffer trouble.
To dream that you are kicked by a donkey indicates that you are dealing with illegal things, and this will cause you much distress when you are captured doing so.
To dream that you are leading a donkey by a halter suggests that you are excellent at showing other people how to do things and that they understand through your guidance.