MADISON, Wis. — A flyer circulating Sunday night advertising a "Block the Beltline" protest for social justice prompted hundreds of Madison residents to reroute their morning commutes, but the event never materialized — and local advocacy organizations say they had nothing to do with it. The flyer, which spread across social media, contains several major red flags that suggest it was created to spread misinformation rather than organize a legitimate protest. The circulation of the fake flyer comes as Madison experiences a surge in protests following the shooting of Corey Ruiz. The most glaring problem is no one knows who...