We have to love all people,which love means that you do not want any harm to come to them,and you want only the best for them,regardless of how they behave.
We have to love all people,but we might not like them all.
Like is where we can tolerate the person to actually hang around them,for we like their character,and it does not bother us.
We have to love a person like Hitler,but we would not like him,and would not want to associate with him,for we would not like his character.
We might not like everyone,but we have to love everyone.
Love,want only the best for them,regardless of how they behave.Like,their character,and can associate with them without it bothering us.