1. The Establishment Clause is part of the First Amendment to the U.S. Constitution. It says that the government can’t create an official religion or favor one religion over another. This helps keep a separation between religion and government. The Lemon Test comes from a Supreme Court case called Lemon v. Kurtzman (1971). It helps decide if a law breaks the Establishment Clause. 

2. Burning the U.S. flag is considered protected speech under the First Amendment. This was decided in the Supreme Court case Texas v. Johnson (1989). The Court ruled that flag burning is a way to express a political opinion, so it’s protected as free speech, even if some people find it offensive.

3. When someone says, “I’m taking the Fifth,” they are referring to the Fifth Amendment, which gives people the right not to answer questions that could incriminate them. This means they can refuse to speak in court or during police questioning to protect themselves from getting in trouble.