Police stops were more common in Chicago last summer than they were at the height of New York City's controversial "stop-and-frisk" practices in 2011, according to a new report from the American Civil Liberties Union of Illinois.

Chicago police made more than 250,000 stops that did not lead to arrests between May and August 2014, disproportionately impacting African Americans, according to the report. Chicago's rate of street stops in those months was more than four times New York City's in the summer of 2011.

"What this data shows should be a wake-up call for residents of the city," Karen Sheley, senior legal counsel at the ACLU and one of the authors of the report, said in a statement. "CPD is engaging in wholesale stop-and-frisks of African-American youth, without any link to criminal activity in most cases."

This data may even understate the number of stops in Chicago, since police in the Windy City only recorded stops that didn't lead to arrests or tickets. http://www.vox.com/2015/3/23/8279297/chicago-police-stops-nyc