Multiracial Families

What kind of challenges do multiracial families face? What issues do families deal with when the mother and father are of different races and the children are a mixture of the two? What about when the parents are of one race but have adopted children of another? Some of their challenges are the same as those facing families who are the same race, of course, but there are others that arise because of the families' multiracial nature. Do family members have trouble understanding what each oth...