What is the ruling on warning against cartoons that touch upon matters of faith: Is it obligatory to warn against them, or should we stop them from being shown in our homes to prevent their spread?

What is understood from the question is that warning against films may be a cause for their spread, and that silence about them prevents knowledge of their existence from those who are aware of them. The rule in this regard is that a hidden evil is denounced secretly, and an apparent evil is denounced openly. If these films are publicized such that they become accessible to everyone, then their denunciation and warning against them must be publicized and made widely known. However, if it is known about a specific person that they are unaware of the existence of these films, and that if they are warned against them, curiosity will lead them to watch them, then such a person should not be warned or informed of their existence in the first place.