Often, these authors are trying to make a statement about society. They use sex and violence as tools to show the problems or issues in the real world. For example, they may be highlighting how violence can be a result of social inequality or how sex is misused in certain cultures. By depicting these extreme elements, they aim to shock the readers into thinking about these matters.
Yes, they can be. Such graphic novels often contain disturbing and inappropriate content like excessive violence and sexual themes. This can have a negative impact on the mental health of readers, especially those who are young or impressionable, by desensitizing them to such extreme behaviors.
One way is through strict age - restrictions. Make sure that only adults above a certain age can access them. For example, in many places, there are laws regarding the sale of adult materials.
The Joker is definitely violent. His violence is a key part of his character, used to create chaos and terror. His methods can be very graphic and disturbing.
Varina can be perceived as having elements of violence, but it's not overly intense or gratuitous. The violence might be used to drive the plot or develop characters.
Not all comics are too violent. There are various types of comics, like those for kids or those focused on comedy or adventure, that have little to no violence. But some genres aimed at older audiences might have more intense action and violence.