I think Calgary is a safe because you can walk alone and you could be sure that nothing happen to you. Also,

you can talk with your cellphone at night. Calgary has a great program of security for the citizens. You always see the police on the street. On the other hand, Venezuela is a country unsafe, we have a lot of problems with the security. However, the goverment doesn't fix the problems. You're always exposed that a murder or thief can hurt you. In my country, people die only for shoes or cellphones stolen. Although, I think Venezuela is a beautiful country.