Intermarriage is the glue that really binds societies together. Always has been, always will be. Sure, it's good for people to have friends and work colleagues from different racial groups, but ultimately it's only intermarriage that really binds two groups together at the most fundamental level. It doesn't have to be that every Jews marries an Arab, but there have to be a significant number of mixed marriages, including high profile ones, otherwise the populations will always be separate and separate ultimately means racism.
from the article: Israel can't be a democracy with two classes of citizens