Loving ourselves at the expense of loving others is contrary to the heart of the Gospel. Jesus calls us and enables us (only by His very Spirit living in and through us) to overcome such ego-centric, harsh and selfish attitudes and life-styles.
That's in direct challenge and opposition to clanish, tribal thinking that concludes that whether religion, class or culture - the more one loves one's own, the more one is entitled to hate another.'
For 'hate' put diss, laugh at, mock, scorn, ignore, fight against, scoff at . . . all of which happens between denominations (which are the un-happy product of nation-state times and critical, Cartesian/cognitive/modernistic times) and which also happens when emergents get thinking about liminals (former establishment and institutional 'christendom'), and vice versa.