As a Range Safety Officer, I am constantly on the lookout for anyone not following the first two of NRAs safety rules.
Muzzle always pointed in a safe direction and finger off the trigger until ready to shoot.
My personal feelings on Glocks are mixed. I presently own four Glocks. Have owned them about 22 years.
In a heated situation, it is a great gun to depend on, because they are inherently easy to shoot. This ease of use, is a two way street. Many people have experienced neglect discharge events, because they are so easy to shoot.
Own a Glock, or any handgun, get proper training from a certified handgun instructor. Your life, or someone you love, is at danger if you do not.