WMPT PBS NewsHour March 25, 2011
>> could we make tools to make the human rights movement more powerful by helping them do more with the information they have about human rights abuses? >> lehrer: newshour political editor david chalian goes through the list of republicans preparing to run for president in 2012. >> woodruff: we get analysis of this week's news from mark shields and byron york, filling in for david brooks. >> lehrer: and margaret warner explores the looming food crisis in north korea. >> they're typically in a chronic situation where they can barely feed their own population, so a big shock like losi...