It appears that he has some sort of bullet proof vest under his shirts.
Originally thought fanny pack, but maybe a crotch protector?
http://www.galls.com/photos/styles/BP216_500_1.JPG
Why the long sleeve shirt worn over another shirt?...Charleston had a high temperature of 99 yesterday and was probably in the mid-80s at around 8 PM, the approximate time of the shooting. This person was covering up something...arm tattoos, breasts, protective gear...or, the second shirt was part of a disguise?
“It appears that he has some sort of bullet proof vest under his shirts.”
The vest could also be for suppressing signs of female breasts ... squash them down .. the photo at the main door with the car off to the back - side ... the perp’s face looks to have feminine characteristics... Hair could be real - a very lesbo look I have seen many times.
Either that or a very feminine looking guy. Skin color is not white-white ... tanned — could be any mixed race. Just some thoughts...