Communication is so powerful that several specific rules are worth following. Be gentle, positive and uplifting. Project a feeling of safety in others. Use empathy and compassion rather than judgment and righteousness. Do not approve of inappropriate discussions about colleagues; make it clear when you think something is hearsay or unproven. Do not let broad, negative comments about colleagues go unquestioned; they only encourage and unwittingly approve additional such comments. Avoid trash talk. Be careful of demonizing others; even if guilty of wrong-doing, the person is still a human being, and we all make mistakes.
Having a personal belief, solely and simply by itself, cannot justify harmful actions to others. The actions and their consequences must be judged by themselves and independent of underlying beliefs.
Simple dislike of a person can never justify destructive actions toward that person.