A.You really should read up on the Glock design. A Glock WILL NOT go off unless one of two things happens:
1. The trigger is pulled, whether you did it on purpose or not.
2. Something breaks internally. This is HIGHLY unlikely.
I'll bet $100 that I can cock my G23 and throw that son of a bitch (unloaded, of course) as far as I possibly can, and I'll guarantee it's still cocked when I go to pick it up. Guarantee.
B. If the gun fires while holstering, you've pulled the trigger. Plain and simple. If you somehow (though I'm not sure how you'd screw this up) manage to get the holster to pull the trigger, then you really should invest in a quality holster.
C. Cops are some of the dumbest motherfuckers to ever get behind the trigger of a gun. It is my opinion that most should stick to flashlights and batons until they can prove beyond a doubt that they know what it is that they're doing.
D. Glocks are popular because of Rappers and Hollywood? No. Glocks are popular because they work. Rappers and Hollywood also swing from the nuts of the Desert Eagle, but I wouldn't consider that a great gun by any stretch.
E. If you don't like the design, it's because you don't know how it works. The main reason most folks don't like a Glock is because they don't like the grip angle. Not because they feel they need a safety to cover their negligent ass.
No, I can call a negligent discharge what it is; negligence.
Glock may have been sued, but it's been because of the dumbass holding the gun. Again, the gun won't fire unless you tell it to.
Again, most people who hate them, hate on them because of the grip angle, or they prefer the xD or M&P.
That's purely opinion. Better how? Granted, I love me some 1911s, but if you want to start comparing reliability of a Glock vs. a 1911, Glock will tear your ass up every single time. Accuracy? Yea, I'll give the win to the 1911.
Basically what it comes down to is, if you have to rely on an external safety to cover your ass, you probably shouldn't pick up another firearm until you've got The 4 Rules drilled into your head. They're there for a reason.