"I believe in my constitutional right to privacy, and I do not consent to a search."

Well, unless you're not so bright and that car is smelly.

 

Didn't work for me, actually had the opposite effect. Don't throw the book at a cop...it will only irritate them, UNLESS you are video recording and want to get shot. The only times they haven't searched me is when they asked if I minded if they searched my vehicle and I said nope go right ahead.

 

They need probable cause to conduct a search. That probable cause can be completely made up on the spot as "I smell marijuana coming from your car". It's one of cops favorite lies. If you do actually have weed in your car it should be hidden somewhere really well. It is true that not consenting to a search will make them suspicious and more likely to search more thoroughly.

A lot of cops are corrupt assholes but if you think saying "I don't consent to a search" is going to get you shot you're just living in a fantasy world. But most people are these days anyway. Ideally just keep weed out of your car at all times if possible. It's not worth the bullshit and stress in a day and age where everyone is doing something illegal even if they're not trying to or they're not aware.