Quoting Richard Lovelace (p 54),
“People who are no longer sure that God loves and accepts them in Jesus, apart from their present spiritual achievements, are subconsciously radically insecure persons… Their insecurity shows itself in pride, a fierce, defensive assertion of their own righteousness, and defensive criticism of others. They come naturally to hate other cultural styles and other races in order to bolster their own security and discharge their suppressed anger.”
Bob Wriedt 
So true.