I don't know if the WBC ascribes to this, but there are/were several roadside 'preachers' up here in Canada, going on about how the opposite of Love is not Hate. It was Apathy So it was 'OK' to hate.
As I had a confrontation with one a while back, my understanding that Love is about Peace, Tolerance and Understanding. Where as the opposite, Hate, is about Fear, Anger and Violence. Which to me, the latter is definitely not a healthy mindset.