Businesses in downtown Chicago that survived the pandemic-related economic slump and two spasms of looting last summer should be ecstatic with Monday's reopening of America's third-largest city. "I work downtown so I'm here every day during the day but I won't come down here at night or on the weekend." Roseanna Ander, founder and executive director of the University of Chicago Crime Lab, stresses that the uptick concerns gun crimes and other types of violent crime -- also experienced by other cities around the United States. On Tuesday, a day Chicago experienced its third mass shooting in three days, she called for more federal help to stem the flow of illegal guns but also struck a positive tone. The city's police department has asked the University of Chicago Crime Lab to analyze the violent crime wave.