As the Trump administration’s mass deportation raids continue, their impact has stretched across the Chicago region and the nation. The Department of Homeland Security said it had arrested more than 4,300 during the two-month Operation Midway Blitz, which began the first weekend of September, but it has not offered more detailed figures on the backgrounds of detainees. More detailed data of many of the arrests, both obtained by the Tribune and as part of a federal lawsuit, indicate that most detainees do not have significant criminal records. Meanwhile, political tensions have deepened, hundreds of immigrants, protesters and bystanders have been...