It's a good rule to follow no matter where you are. Jesus knew this rule. Don't judge or condemn people, or fight back, or be angry with others. Help those who ask you for help. Obeying the Golden Rule is first of all about the way we think.
Good thoughts help.
Bad thoughts hurt. And how we think affects how we act. So thinking the way the Golden Rule says to is really the starting point. Think about others the way you'd want them to think about you. Then you'll know exactly what to do.