When they come across a hate site, they may not be sophisticated enough to know that they should disregard the message being conveyed at that site. We shouldn't require every adult to read only the material that is appropriate for a ten year old. That's one of the perquisites of being an adult, choosing what legal material you want to access. But that doesn't mean that parents, educators and other caretakers of children shouldn't be able to screen out some of these materials when they do not believe that child is ready to be exposed to such information. Parents, educators and caretakers can use filtering software and other technology tools to help screen out certain online material.
Child pornography is illegal in the United States.
In certain other countries it may be illegal to produce it, but not illegal to own it. In others, it may not be illegal at all, or the laws may not be enforced, even if it is illegal. This creates very difficult legal conflicts. They are also working with international law enforcement agencies to stop its production, even where it is currently legal to produce it. Many state law enforcement agencies are also policing cyberspace, when their states are involved.