http://www.slate.com/blogs/the_slatest/2015/02/20/giuliani_obama_doesn_t_love_america_white_mother_grandparents_cited.htmlAs Backlash Builds, Giuliani Cites Obama's White Relatives as Evidence of Non-Racismit's probably because the US is only a generation out of sanctioned apartheid. US k-12 doesn't help.