Equality

Aren't we all created in God's image? Aren't we all God's children?  Everyone should be treated with respect and good will. 

1935 CCC
   Every form of social or cultural discrimination in fundamental personal rights on the
   ground of sex, race, color, social conditions, language, or religion must be curbed and
   eradicated as incompatible with God's design.

Actually, when you think about it, the whole world to work properly needs people to work cooperatively, side-by-side, next to each other.  This has to be equal, not forced.  Anyway, this is the aim, the ideal that we all should be working towards.