Michaels is the sixth act to pull out of the festival. Bret Michaels of Poison performs during the 2019 Stagecoach Festival at Empire Polo Field on April 26, 2019 in Indio, Calif. Frazer Harrison/Getty Images for Stagecoach Trending on Billboard Bret Michaels won’t be performing at the Great American State Fair. The ex- Poison singer has scratched his name from the line-up, a 16-day free festival in Washington, D.C., running June 25 through July 10 on the National Mall to celebrate America’s 250th anniversary. He becomes the sixth act to walk away since the music program was announced on Wednesday, May 27 by Freedom 250. “Unfortunately,” he writes in a lengthy social post, “what was presented to us as a celebration of our country has evolved into something much more divisive than what I agreed to be a part of.…