Best's video: Chicago protesters confront police shut down interstate after release of Laquan McDonald

CHICAGO — Hundreds of protesters flooded streets overnight after a white police officer who fatally shot a black teenager last year was charged with first-degree murder on Tuesday and a graphic video of the killing was released. While the demonstrations, which at times blocked some of Chicago’s busy Interstate highways, were largely peaceful, some turned confrontational during the night. Skirmishes broke out between protesters and police, who surrounded officers after they apparently made arrests. Protesters also tried to stop a police SUV from leaving with arrestees — an effort that failed. As the sound of sirens filled the air, police were met with shouts of “16 shots” — the number of times the officer charged with murder fired at Laquan McDonald, 17, in October 2014