fred de sam lazaro reports on efforts to change that practice. >> the combination of official and middle-class indifference, and dire poverty, drives perhaps 50 million children into the workplace. some as young as six or seven. >> ifill: that's all ahead on tonight's "newshour." >> major funding for the pbs newshour has been provided by: >> supported by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the ongoing support of these institutions and foundations. and... >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: the american public learned a little more today about the sweeping surveillance of telephone communications, revealed by edward snowden. the government released heavily redacted documents that showed, broadly, how the national security agency uses the data. and, in london, "the guardian" newspaper published images of what analysts see, under a program known as "x