Yeah a lot of people don't seem to understand, that no matter what situation you're in, whether you're guilty, innocent, you think the cop is in the wrong, etc. "mouthing off to a cop" is the never the correct course of action.It's like many of the taser videos on youtube. It starts with the cop approaching someone initiating the contact. Then the whole "Do you know why i stopped you bit". Somewhere along the line the person starts ignoring what the cops tells them to do. For instance, they get out of their car and when told to get back in the car they ignore the direction and keep running their mouth. Whatever it is they are not listening to the cop. At some point, and it's usually easy to spot in the video, the cop switches gears and you can tell, He just made up his mind, He's going to arrest this person. Usually it's prefaced by the words "I am placing you under arrest". From that point on if you run, try to get back in your car, continue to argue, if you resist when He grabs you, you have just made your immediate future very unpleasant.
Most people don't think well at this point, but being arrested is the smallest of problems at this point. A Judge could pitch the case, you never know. Arrest precedes charges, arraignment, and a trial, it doesn't necessitate them. But resisting that officer can easily add on other charges that become very hard to beat in court and frequently are far worse then the original issue the cop stopped you for.
Most of you guys don't need to be told this stuff, but I suspect there are a few that still do.