Its wonderful that you have a free speech zone but you may want to read the following:

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.

The above is the first amendment to our constitution of the United States of America

According to this THE ENTIRE U.S. IS A FREE SPEECH ZONE

This supersedes all other authority, by specifically designating a "Free Speech" zone your school is saying you do not have this right elsewhere on campass, this is not acceptable. If your school does have restricted speech, fosters a cultural of political correctness, or has actual speech codes, it violates your constitutional rights.

If your school has such policies they are breaking the law and need to be sued to have them revoked.

The first amendment is absolute, do not let your school or any other organization trample on your God given rights.

Universities were meant to be a place of free flowing intellectual exchange, not boot camps for intellectual facism