1. The Establishment Clause is a part of the First Amendment that ensures the protection of religious freedom. This clause also protects the people by having a set of religions imposed by the government or other authorities. 

The Lemon test is an exclusion to the Establishment Clause. Under the Lemon test, the government can decide about your religion if it meets a criteria of three parts. 

2. Burning the US flag protection by the First Amendment is a result of the Texas v. Johnson case. In this case, the Supreme Court claimed “that burning the flag was a form of symbolic speech protected by the First Amendment and found the law, as applied to flag desecration, to be unconstitutional.” 

3. When someone says “I’m taking the Fifth” means that that person is taking his/her right of remaining silent which is protected by the Fifth Amendment. The right of remaining silent is also known as right against “self-incrimination”