There is very little violent crime around or near VCU. It's pretty highly concentrated in areas that you won't have any reason to go to. Even if you did go to those areas, if you don't draw attention to yourself you'd probably be fine. You'll learn where those areas are really quickly.

Living in the VCU area, I'd say make sure you don't leave anything that you value in the open or unattended or it will get stolen. Don't leave valuables in your car and always lock your car. Always lock your doors. If you have any nice electronics make sure they aren't visible to anyone walking by. Lots of petty theft.