If you feel uncomfortable around some ideas, don't run away! Instead, think "why?". Do you have some preconceptions that are being challenged? Are the ideas themselves obviously false? Do you not agree? Embrace the discomfort, challenge yourself, challenge the speaker. Conduct yourself with respect and proceed with an open mind and you will be ok.
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.