The Establishment Clause states that the government cannot create a religion or favor one religion over another. This ensures that there is a separation between state and church. The Lemon Test is used to decide whether or not a law violates the Establishment Clause. A law must the pass the 3 criteria of the Lemon Test, if it fails any part of the test, it is considered to be unconstitutional.
Yes, burning the US flag is protected by the First Amendment. In the Supreme Court case Texas v. Johnson in 1989, Johnson was arrested for burning a flag during a political protest. The Court stated that the flag burning was a form of symbolic speech, which is protected under freedom of speech and ruled in favor of Johnson.
When someone says, “I’m taking the Fifth”, it means that they are choosing not to answer a question because their answer can incriminate them. The Fifth Amendment protects people from self incrimination, allowing people to remain silent when being questioned.