The Ohio Supreme Court hears arguments Tuesday in a case that pits defenders of online child protection against advocates of free speech. It is one of the longest running cases in the country that grapples with how states protect minors from pornography and predators on the Internet without stepping on the rights of adults and older minors to hear, see and read certain protected content. A pair of federal laws in the 1990s pushing decency restrictions and safety online were struck down as unconstitutional, as have been a host of similar state laws.