The elite Left needs that callous, bigoted, brutal image of the "religious right" desperately. It's one of their principal weapons, a bogeyman that never ceases to frighten the Gentle People: You better vote Democrat or the Religious Right will get you!
Thing is, you can't keep people ignorant forever. Eventually, everyone will meet a few believing Christians, and compare them to the Left's stereotypes. From there it will be a pure sleigh ride.