Treat hate violence as a sin. Hate violence is not just a sociological or psychological phenomenon. It is a violation of the rights that come from God in creation itself. It is a human attempt to deny that all of God's creation is good. It is nothing less than sin.
Nothing is worse than silence.
Let the community know that your congregation is unalterably opposed to hate violence. Study the Bible and find the particular passages and themes that give guidance. Much hate violence is perpetrated by persons who misuse Scripture in an attempt to justify wrongful actions. Let everyone in your congregation and the community know that you stand strongly in the prophetic tradition. It is important for laity and clergy to challenge and support each other.