william malmberg is a columbia heights police officer. and the cover-up is on. >> police call this professional courtesy. the notion that cops don't take it other cops. >> i don't condone their behavior. i wish they made a different decision. >>.wolf is a retired officer. and current law enforcement instructor at alexandria tech. this is a contentious subject. >> wolf says there can be a lot of peer pressure. >> a lot of alleles -- police officers feel that pressure. wolf has written about professional courtesy. >> the article is the most commented article i've ever written. >> he makes the argument against the badge means a get out of jail free card. >> it is a serb the department or the profession and doesn't serve the officers. they just get the attitude that there are no consequences. >> the officer and his get out of jail free card wants to make sure there's nothing about his >> on this night no arrest, new report. no mug shot. dawn breaks with a free pass. because he wears a bass -- badge. >> the police chief in blaine, minnesota do