Royster is the founding pastor of a United Church of Christ congregation in North Philadelphia. Unlike the Unitarians, the UCC probably has more members who believe God exists than believe in UFOs. The UCC is the denominational home of Elijah G-D America Wright of Chicago. As best I can tell, "Bishop" is not a leadership or honorific term used by the UCC, so that title may have come from elsewhere.
Calling a Federal budget that cuts the rate of growth for social programs "ethnic cleansing" is exactly the kind of dishonesty I would expect of a UCC misleader.