>>5493761only because the rebels were using heavy blasters that could go through their armor.
civilian guns couldn't.
So, since the movies and most of the comics followed the rebel army, you never really saw the Stormtrooper raids against hidden posts and against civiilan uprises where they basically used the equivalent of this shit against them.
Of course, even an cop wearing his bullet proof vest still might fall down or stagger when being hit, even if it never went through hte kelvar or plate, because kinetic energy is a bitch.
Of course, even in the Star Wars books, stormtrooper armor repelled even heavy blaster fire. Also, clonetrooper armor was superior to stormtrooper armor, so it could withstand stronger blaster fire.