True enough but still confusing, at least to me. We have the Canadian OP who feels that it was good to challenge to cop, meaning I guess that in Canada the drivers are more trustworthy than the cops? We had a comment from the UK that seemed to imply that they assume US cops like shooting innocent people. I watched a IMO very nice long youtube by a US lawyer who went on and on about being courteous and cooperative with the officer, but the poster who put up the video interpreted it as "say as little as possible". I don't know of any country where challenging/ arguing or fighting with the police is a good idea, even if the police are all part of some terror organization in a war torn country. Good cop or bad cop alike, cooperating and being respectful gives us power over the situation. Bringing a smart mouth to a gun fight or a billy club fight (in places where cops don't have guns) is seldom the best defense!