Factual error: In the bar scene there is a sign for Genesee beer. That brand never went west further than Pennsylvania.
Factual error: At the David Duke meeting, a Klansman is told to take an urgent call on the phone and goes outside to take it. The grey telephone is a British 1970's one, not an American one.
Factual error: There is a modern 3200 Series Fire Department Knox-box near the ending scene on the Colorado Springs Police Department Building. The Knox Key-less entry System has been utilized by firefighters for 40 years, but this one is way ahead of its time.