Stupid people like you and RetiredGySgt do exist and do vote to violate the rights of others but that does not negate the fact that rights do exist and no one has the right to violate them including the voter, their representatives or their law enforcement agents. You don't get to stop everyone or pass a law allowing others to do so and then mandate that they provide proof of license or identification and when they are unable or refuse to do so to seize them or their property. This right is something you cannot deprive people of and that is why the Fourth Amendment was cited in this article. Because it is apparent you haven't read the Constitution I will reference the amendment for you. It says "The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."
This right protects people from police officer stopping them when they have not committed any crime, and searching them or their property. A person can feel secure knowing that so long as they violate no law and don't give the police any reason to stop them that they are secure in their persons and property. A police checkpoint used to force people to provide identification is a violation of the 4th Amendment because it infringes on their right to be free to go about their business as usual without any impediment unless they violate the law. So a speeder can be stopped and can be forced to provide proof of license and insurance because they violated a traffic law or if the police have probable cause to believe that someone is driving while intoxicated then they can force them to provide proof of license, insurance and take a road sobriety test. All because they have probable cause but no probable cause can exist in a forced identification checkpoint.