Officials in Australia said father and son attackers killed at least 15 people in a shooting during a Jewish holiday celebration in Sydney. Video showed a bystander tackling one of the suspects. NBC News' Raf Sanchez has more.
Montreal police said they will increase their vigilance and visibility in areas where Jewish neighbourhood celebrations are taking place until the end of Hanukkah after a mass shooting in Australia.
;Resize=(620))
;Resize=(620))
