Easy!
1. Make laws
2. Keep order
3. Help citizens
4.Protect the country
The Constitution lays the framework for individual rights in the first ten amendments of the Constitution (also known as the Bill of Rights).
In the Bill of Rights, US citizens are guaranteed a significant amount of rights. This includes the freedom of speech, freedom of religion, right to bear arms, right to a jury trial, and freedom of press (to name a few). These are constitutional rights that citizens will have as long as the Constitution remains in use.
The Constitution of the US also creates a balanced government. This is thanks to the three branches of government. This includes the legislative, judicial, and executive branches. All three of these branches have different roles. Along with this, each branch has the ability to check each others power. This ensures that no one part of our government will be too strong.
The resolution of the Supreme Court Case of West Virginia State Board of Education v. Barnette was a landmark decision reached by the court, which stated that the right of freedom of speech provided by the First Amendment legimated students to refuse to salute the US flag or to spout the The Pledge of Allegiance of the flag if they attended a public school. It is therefore not mandatory, and more important, not considered a criminal offence to refuse to perform publicly patriotic demonstration acts.
The court victory was achieved by the Jehovah's Witnesses who, due to the prescriptions of their religion, could not salute or pledge to symbols. The Supreme Court ruling decided that the state should not have the power to oblige citizens to express themselves in a certain manner. Therefore, it is a clear defense to the right of speech, and it proves how the legal and judicial instruments guarantee it for citizens.
So sorry but I'm not answering your question cause I really didn't come here to help people, you see I'm a chaotic evil, so I'm pretty sure I'll just go around this website doing the same thing to other people that I'm doing to you. While getting answers myself.