@CNN: Dave Cullen, author of “Columbine,” joins Full Circle a year since the Parkland massacre to discuss what he learned while writing his latest book, an intimate account of the Florida shooting’s survivors and their extraordinary movement. Tune in now: https://t.co/SYnW4g15j2 https://t.co/6ePCRxxKXH

@CNN: Dave Cullen, author of “Columbine,” joins Full Circle a year since the Parkland massacre to discuss what he learned while writing his latest book, an intimate account of the Florida shooting’s survivors and their extraordinary movement. Tune in now: https://t.co/SYnW4g15j2 https://t.co/6ePCRxxKXH