Question

How did the decision the Supreme Court reached in Texas v. Johnson affect the protections offered by the First Amendment?

Answer 1

Well hopefully you have some background knowledge on the whole case...
If not here ya go! The Supreme Court declared that Johnson's act of burning the flag was a form of expression and speech. Therefore, his action was protected under the first amendment of the Constitution. 

Answer 2

The case Texas v. Johnson is a 1989 judgment of the United States Supreme Court. It stated that the laws condemning the profanation of the American flag, then in force in forty-eight states, were inconsistent with the First Amendment and the Federal Constitution which prohibited Congress from restricting freedom of expression.