Chicago Mayor Lori Lightfoot has accused a conservative super PAC of darkening her skin in a television ad meant to slam Illinois' Democrat Governor J.B. Pritzker, calling the commercial a 'cheap trick' to scare people into voting for their candidate. The 30-second ad - which warns in big, white lettering that 'Chicago violence is coming to the suburbs' and shows gun battles on the city's streets - touts Republican Darren Bailey as the solution to the city's current crime woes, and uses comments uttered by Lightfoot in a recent speech to seal this sentiment home. The ad opens with Lightfoot,...