Bitter Root Volume 1: Family Business by David F. Walker

Once known as the greatest monster hunters of all time, the Sangerye family specialized in curing the souls of those infected by hate, but those days are fading. A terrible tragedy has claimed most of the family, leaving the surviving cousins split between curing monsters and killing them. Now, with a new breed of monster loose on the streets of Harlem, the Sangerye family must come together, or watch the human race fall to untold evil.