Communication has to work both ways, and people may have their own motives for what they say, as well as voicing their opinion..like protecting their own. Some people will fight to the end to make their point, even if they are wrong..that's where a third party's input such as a councelor, guidance teacher, or priest might help in resolving the issues, and/or change perspectives. If the issues are of a legal nature we may need a Judge to deem justice.
We should be more tolerant of each other when it comes to differences, but nobody likes a critic!