>> that she loved conrad roy. she really cared for conrad roy. she thought she was supporting what he wanted. and she even talks about it in her texting. "you're going to go to heaven," as he talked about. "you're gonna be a great angel." >> reporter: after six days of testimony, the fast-moving trial wraps up with closing arguments. >> it's a new day and age, your honor, and the phones that we have now allow you to be virtually present with somebody. people fall in love on the internet and via text, people bully via text and the internet, and you can encourage someone to die via text, and you can commit a crime via text. >> you can look at the various text messages, as well as the psychological records. you will see that mr. roy himself stated to michelle carter, "i want to die." straight up, those words. i want to die. this is not a homicide. michelle carter did not kill conrad roy. it's sad. it's tragic, but it's just not a homicide. >> she absolutely knew it was wrong, and she absolutely caused the death of this 18-year-old boy. and i ask you

. >> woodruff: mike conrad is a teacher at roy oak high school, in detroit. thank you very much. we turn now to a darker side of the response to the parkland loooting. hari sreenivasan es the anger, lies and conspiracy theories cropping up online. >> our entire nation is praying for the victims and their families. >> sreenivasan: the imrediate onse to the school shooting in florida was a wave of prayers and condolences from around the country. what quickly followed? a flood of allegations and conspiracy theories about the students calling for gun reform. >> i just know we are being fed something as phony as a three dollar bill. >> sreenivasan: right-wing outlets, like gateway pundit and infowars, and online trolls are promoting the false theory that some of the parkland teens are actually paid actors. the target of many of these attacks is stoneman douglas senior david hogg. he has been called an f.b.i. plant who was coached by his father, and a "crisis actor," after video surfaced of a california cbs story featuring hogg from august. > these people saying this is absolutely dist