When a #gunman opened fire last month at Michigan State University in Lansing, #Michigan, the school sent a message to all its students, urging them to "Run, Hide, Fight".

#gunman who killed seven people outside a synagogue on the #outskirts of the city,

#gunman who killed seven people outside a synagogue on the #outskirts of the city,

Police said the #gunman arrived at around 8.15 p.m. and opened fire, #hitting a number of people before he was killed by police.

#Gunman kills 3 people in US' #Washington, #shoots himself

What we know about California #mass #shooting #gunman

#news Wallasey pub shooting: #Police hunt #gunman after woman dies