I examined the photo to see if anything Chicago was identifiable. I found nothing. This guy claims that these are Wile E. Coyote's go to bricks.
Pallets of bricks delivered ahead of Chicago DNC; Antifa prepares for 'summer of rage' - Sqauk
Suspicious deliveries of bricks have been reported in multiple locations across Chicago as the city braces for the Democratic National Convention (DNC) 'Hell Week'
sqauk.com