In other cases, special interest groups as well as social and religious institutions found much of the content objectionable, even dangerous. Many parents and religious organizations, especially in the United States, became alarmed by pornography being more readily available to minors. In other circumstances the proliferation of information on such topics as child pornography, building bombs, committing acts of terrorism, and other violent activities were alarming to many different groups of people. Such concerns contributed to arguments for censorship and regulation on the WWW.