Worst US Mass Shootings in Last 25 years

• At least 50 dead, 2016 - Omar Mateen opens fire on revellers at gay club in Orlando, Florida
• 32 dead, 2007 - Student Seung-Hui Cho massacres students at Virginia Tech university before killing himself
• 27 dead, 2012 - Adam Lanza kills 20 six- and seven-year-old children and six adults before killing himself at Sandy Hook, Connecticut
• 23 dead, 1991 - George Hennard drives through the wall of a cafe in Killeen, Texas, before opening fire and committing suicide
• 14 dead, 2015 - Syed Rizwan Farook and Tashfeen Malik open fire at a staff gathering in San Bernardino
• 13 dead, 2009 - Maj Nidal Malik Hasan opens fire at army base in Fort Hood, Texas
• 13 dead, 2009 - Jiverly Wong shoots people at New York immigrant centre before killing himself
• 13 dead, 1999 - Eric Harris and Dylan Klebold kill fellow students and a teacher at Columbine High School in Littleton, Colorado
•                                                                                         ''BBC News''