Freedom of expression means that you can make any statement you like without fear of being imprisoned, fined, or otherwise penalized by the government (ref. this post).

It does not mean that you are immune from criticism, including criticism of one's patriotism if one's remarks look to be not just critical of the approach your government is taking, but is actively supportive of an enemy and disparaging of one's own country. Being anti-American is not a crime, and should not be. But that doesn't mean others have to agree.

Or in short, telling someone they are full of crap is not censorship.

Those debates sound like they would be interesting.