The beginning

It is funny what we can remember from our childhood from all the joyful times and not so joyful times.  My most earliest memory is my father abusing her mother and the loud train that would come by our apartment.  I can remember one time around the age of 3 or 4 years old my father hitting my mother and me thinking it should do something. Then I can recall myself flying backwards and hitting the screen door.  What was I learning about relationships at this time?