Lollapalooza returns to Chicago tomorrow through Sunday, Aug. 2. With hundreds of thousands of attendees expected, the Chicago Police Department encourages ever

Lollapalooza returns to Chicago tomorrow through Sunday, Aug. 2. With hundreds of thousands of attendees expected, the Chicago Police Department encourages everyone, inside and outside of the festival, to be aware of your surroundings. If you see something suspicious, call 9-1-1.