How many innocent people have been sentenced to death?

Up w/ Chris Hayes panelists Liliana Segura, associate editor of The Nation magazine; Michael Brendan Dougherty, politics editor of BusinessInsider.com; New York Daily News columnist John McWhorter; and Barry Scheck, co-director of the Innocence Project, discuss a new report from the Center on Wrongful Convictions that suggests as many as 100 people have been wrongly convicted and sentenced to death since 1989.May 27, 2012