first off I am not sure it is against the constitution to stop people and ask for papers as it were. You are exercising a priviledge when driving and as long as the law is applied to all evenly they can do traffic stops with out violating your rights.
you choose to drive and the government is allowed to verify your permission to be behind that wheel.
as for the assaulting the officer. BS she did not assault... send the cop back to the acadamy. she was resisting a valid arrest that is not the same.
Finally even if a cop finds materials that are subversive and claims that the constitution is contraband. That is different than the government spiraling toward NAZISM. Cops can be wrong and in court if the search is wrong or if the contraband is not illegal it will be determined and the cop will be wrong.