They've released two photos of a young man wearing some sort of hood and a black bandana over his eyes and nose. CrimeStoppers is offering a reward of up to $1,000 for his identification.
If you have any information about the suspect, you're encouraged to call the CrimeStoppers Tip Hotline at 1-866-371-TIPS (8477).
Large protests downtown, in the Central West End and the Loop in recent days have been followed by actions involving much smaller groups — and some agitators breaking windows and smashing flowerpots. But while the acting police chief has boasted that "the police owned the night" after Sunday's face-off, the 123 arrests notched by police that night include 120 that were solely for "failure to disperse."

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