Discouraged nurse

im an agency nurse, started out as an LPN in 2005, worked nursing home for a couple of years; went back for my ASN, and recently completed my BSN. this agency nursing is wearing on me because a lot of my shifts get cancelled when census' is low. I have put in several applications at several different facilities and haven't gotten any replies or call for an interview. I always question is nursing what i really want to do. It seems like someone is always watching you waiting for you to mess up. Most nurses I have run into tend to exaggerate and empasize your mistakes to glorify their own work (there are a few that i have met that don't). I just really don't understand if there is such a shortage, why isn't there any job positions open here in shreveport or bossier? I am very discouraged right now....any advice please. One of the most discouraging parts is the pay, working agency pays well, if i work full time at a facility, that will be at least a $8-10 decrease, and will be an even larger decrease if i work in some type of doctor's office or clinic....

one more question....why are there no black nurses in the ER?