Civil Rights activist attacked on Twitter03:42
Soon after "Black Lives Matter" activist Deray McKesson arrived at a unity march in South Carolina to commemorate the nine lives lost in the Charleston Church massacre, the hashtag "Go Home Deray" went viral. Alex Wagner speaks to McKesson about trending hashtag.
Men and mass shootings06:02
Reports: Jury sentences Charleston church killer to death04:14
Dylann Roof state trial delayed indefinitely03:32
SC gunman claims his mental health is sound03:03
Church gunman addresses jury as penalty phase begins04:21
The most poignant moments from Charleston01:45