User blog comment:Potato9999/My thoughts on the Silver Wolves/@comment-5190758-20120818224806/@comment-26516989-20120823225836

well modern riot sheilds are not designed t stop bullets. The only ones that do offer protection do not give protection against anything higher than 9mm or low caliber shotgun shells such as 10 guage. (I doubt that truck doors offer much protection either.) What riot trooper have are apparently Ballistic Shields. Even those offer minumum protection. Such as shotguns and sub machine guns. Others offer greater protection but are extemely heavy and need to be mounted on wheels for use. (Riot Troopers seem to have light weight ballistic shields. A rifle such as the ones troopers use, could penetrate it. A sniper rifle round would go through it destroying the shield.)

But yes I don't understand how a car door offers more protection than a military grade ballistic shield.