CHICAGO (AP) — A day after the election of Donald Trump to the presidency, thousands of demonstrators flooded streets across the country in protest. Some carried signs with messages declaring “NOT MY PRESIDENT.”

From New England to heartland cities like Kansas City and along the West Coast, demonstrators declare that they refuse to accept Trump’s victory.

Chicago police say they arrested five people as protesters expressed their disapproval of the election of Donald Trump as the nation’s 45th president.

Chicago police spokesman Anthony Guglielmi says in an email that an estimated 1,800 to 2,000 people protested Wednesday. Among those taken into custody were two men for obstructing traffic, two men for reckless conduct and trespassing, and a boy for trespassing and resisting arrest.

Overall, Guglielmi said there were “no major incidents.”

Protesters marched through Chicago’s Loop and gathered outside Chicago’s Trump Tower. “No Trump” and “Not my president!” were among chants shouted by the crowd. About a half-dozen Trump supporters were also in front of Trump Tower.

For a time, protesters made their way to Lake Shore Drive to block traffic, before returning to Trump Tower.