CHICAGO (AP) — A Cook County judge has ruled the arrests of more than 90 Occupy Chicago protesters last October were unconstitutional.

The arrests came after hundreds of members of Occupy Chicago refused to take down tents and leave Grant Park when it closed at 11 p.m. But Associate Judge Thomas Donnelly tossed out the arrests Thursday, ruling the city often chooses not to enforce the curfew for events it supports.

Attorneys from the National Lawyers Guild who represent the protesters said the ruling "sends a clear message" that the city must respect First Amendment rights.