Why isn't loli illegal, despite its controversial nature and potential harm to society?

The legality of loli, a form of anime or manga depicting underage characters in a sexualized manner, is a complex issue. While it is controversial and can be harmful, it is not always illegal because it is considered a form of protected speech under the First Amendment in the United States. However, possession or distribution of explicit loli content can be illegal in some jurisdictions due to laws against child pornography or obscenity. Overall, the legality of loli is a contentious and evolving topic that varies depending on the laws and cultural norms of different countries.