Well opinions can be changed over time if circumstances are favorable for it, including accepting new perspectives.
But my only issue is that, when politically correct types confront people with passive-aggressive nonsense like condensension and pretentiousness to present an opinion, it only aims to further alienate people away from listening (or forces them to comply in submission, still resentful). It makes it worse when this is applied with allegations of bigotry towards anyone who may not share their views exactly on the subject they hold dearly. People are not very receptive to having others tell them they're something bad over very minor provocations; because the attitude belittles people needlessly and reflects the same attitude of bigotry. People are much more receptive to someone who can understand that a middle ground must be reached before encouraging a new opinion to be adopted, or at least thought about. To see a person who's casual and rather light-hearted and fun to talk to has a greater success of having people reconsider their attitudes, than someone preaching down their throat and bitching "oh woe is me" when things don't go exactly as planned.
I think once people start to realise this, reconciling is then possible.