While the perimeter of Lollapalooza was gated, some people still managed to find their way in.
The city of Chicago expected around 400,000 people in and out of Grant Park for the city's largest music festival. Streets were closed and fences were put up even a week before the festival began, but about 10 or so people managed to still break in.
Check out the video of the incident below and click this link for more information.