The Last Word with Lawrence O'Donnell 03/29/16

On the Trail: Trump aide Lewandowski charged

With just a week to go before voters go to the polls in Wisconsin, the campaign trail was dominated by the news that Trump campaign manager Corey Lewandowski is now facing an assault charge. MSNBC's Lawrence O'Donnell shares the latest from the campaign trail. ... more Duration: {{video.duration.momentjs}}