oscar grant was not cuffed, go look at the video.. after hes shot his arms are free.
mehserle was not highly trained, its bart police for gods sake, a week at the shooting range, a little certificate and whoop-tee-doo he's 'certified' in gun safety. Thats the problem.. to save money they skimp out on officer's training. Shit like this wouldnt happen if they were really trained properly. Wasnt he only 1 or 2 years on the job?
good training costs $1000 and up, which includes being able to pull the gun from your holster and shoot a target bullseye in 1.5 seconds, you should also be able to take your gun apart and put it back together in a specified amount of time.