Public Places Struggle with Controversial Internet Use

The main public library in San Francisco has been stung by complaints about content, including explicit pornography, that some people watch in front of others. It is an issue playing out not just at libraries, but in cafes and gyms, on airplanes, trains and highways, and just about any other place where the explosion of computers, tablets and smartphones has given rise to a growing source of dispute: public displays of mature content.