CHICAGO (WLS) -- A Chicago alderman was attacked outside a popular River North bar last week. Alderman Brendan Reilly said he has no idea why he was jumped, but that it's a troubling incident for an already struggling downtown area. Reilly is in his 14th year serving as Alderman of the 42nd Ward, which includes downtown and River North. Reilly said he was outside The Boss Bar on Clark Street last Thursday night waiting for his friend who was driving him home when a man started yelling at him from the street. Then, it got violent. "Next thing I know, I'm on the ground and he's on top of me, pu...