“The Art of Banksy” Dec. 1 – Feb. 28 Noon to 10 p.m. daily at Magic City Studios 6301 NE Fourth Ave., Miami. General Admission:$35-$50 Tickets can be purchased at www.banksyexhibit.com. Unauthorized is key here. Bansky never gave his permission to showcase any of the eighty, original works on view at this blockbuster-size exhibition. Curated by Bansky’s former manager of 12 years, Steve Lazarides, and co-produced by the promoters behind Live Nation and Starvox Exhibits, “The Art of Banksy,” opened at Miami’s Magic City studios on Dec. 1 to much fanfare. It is a highly controversial exhibition because of its …