One of the largest police organizations in the nation is blasting Nike for the new Colin Kaepernick ad campaign ... saying Swoosh's definition of sacrifice is a slap in the face to those who risk their lives to protect the country.
The brand has been receiving both praise and criticism for Kaep's new "Just Do It" ad -- which features the words "Believe in something. Even if it means sacrificing everything."
TMZ Sports has obtained a statement from the National Association of Police Organizations -- an interest group that represents more than 241,000 officers -- about the new campaign .