Popsugar Family Teachers Teacher Describes Active-Shooter Lockdown Teacher's Heartbreaking Tweets About an Active-Shooter Lockdown Prove Why Action Is So Necessary March 15, 2018 by Victoria Messina First Published: March 7, 2018 View On One Page Photo 11 of 17 ADVERTISEMENT () Start Slideshow Thank you Ali! Powerful & disturbing thread.— Barbara Boyd Cohen (@boyd_barbara) March 7, 2018 Share This Link Copy ← Use Arrow Keys → 11 The Responses Previous Next Start Slideshow TeachersGun ControlSchool ShootingTwitterGun Safety