know where you're at and you're actually concerned, that's what's going to come your way. >> the problem is we see the story in distilled-down blog post, in after-the-fact facebook live posts. one thing an executive said to me, i said should there be regulation? he said we should have a conversation about a good type of regulation. there should be regulation for online advertising. we're going o the try to make our ads more transparent. that means good people will go to google or twitter. there needs to be an industry standard. we need to come together and have this discussion. we see it broken down in blog posts. >> laurie segall, thank you for that information about turmoil, perhaps, at least a little within facebook right now. we'll have much mosh on the school shooting in maryland. breaking news in from maryland. a school shooting in st. mary's county. much more straight ahead. americ