Location choice for a scene that establishes the antagonists

We are thinking of using a graveyard for the scene in which our antagonists are introduced in the teaser trailer. Our reason for this choice is because we think that a dark graveyard may have connotations of evil and creepiness, therefore making it easy for the audience to identify that these characters are antagonists. However we are aware that there are issues with filming such a scene, primarily because our actors will all be holding guns, and this may be seen as disrespectful and could offend some people and viewers.