It is not good enough to just gather knowledge. Rather we need to be trained to be able to answer the tough worldview questions for ourselves and others. When people can connect the dots between their core beliefs, then they have a firm foundation for building out their worldview. Integration of worldview beliefs into daily lives and interactions with others is paramount. This is best done in a small group, or one on one, environment.
At the root, this is a worldview issue. Embracing a relativistic view of morality greatly influences one's actions, politics, and beliefs. Under relativism, morality is defined by either the self, groups, or the broader culture. There can be no objective set of moral standards with regards to sexuality, personal behavior, or social interactions.
Is there any common ground? Because this is a war of worldviews, it is hard. If one side cannot agree with the other that truth even exists, or can be discovered, then what common truth can be agreed upon? When the moral relativists can't even justify why human beings have intrinsic dignity, value, and worth, how can that become a grounding principle? The Christian worldview recognizes the inherent dignity and moral worth of all human beings, from beginning of life to the end, because we are all created in the Image of God. We are all broken because of our rebellion against our Creator, but we are valuable regardless of how we have fallen.
For example, if a definition of "justice" makes distinctions between people, especially in the Church, based principally on classes they belong to (e.g. race, sexual identity, legal status, wealth/social status, historical oppressed/oppressor groups, or other intersectionality), then it is not based on the Christian worldview and is not biblical justice. This view of identity is not compatible with the biblical worldview. All people in the Church need to be held to the same biblical standards of morality, and exceptions should not be made based on their identity or supposed victimhood status.