On the city’s Southwest Side, a 24-year-old man and 47-year-old man were killed in a shooting near a city park . Among those shot was a woman who is nine months pregnant and was wounded in the abdomen. Police made dozens of arrests. They announced the arrests of nearly 80 people on drug- and gun-related charges. Homicides in Chicago this year have risen to levels not seen since the 1990s. At the two-thirds mark for the year, homicides in the city are approaching 500. Chicago has tallied more homicides than the much larger cities of New York and Los Angeles combined. “It’s not a police issue, it’s a society issue,” Chicago police Superintendent Eddie Johnson said Tuesday to the media.