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.
That's the 1st Amendment to the US Constitution. It means that we, as Americans, enjoy the right of Free Speech. We have a perfect right to hold opinions and say things that are totally without merit. It gives us the right to be wrong, to be stupid, to say things that make us appear to be a total ASSHAT. (I actually had to look that term up the first time I saw it, although it should be self-explanatory.)
You still can't yell FIRE in a crowded theater (unless it actually is on fire) and you can still be sued for libel or slander, but otherwise you are free to say anything that comes into your head.
Lately, it seems as though we are not only allowed, but actually encouraged to say things that leave the rest of mankind scratching their collective heads and wondering how the Hell you could possibly be so wrong.