How does matal vs tam relate to the bill of rights?

the U.S. Supreme Court unanimously ruled 8-0 that a federal law prohibiting trademark names that disparage others was unconstitutional because “speech may not be banned on the grounds that it expresses ideas that offend.”

Explanation:

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.