Yes, though Al Jazeera would claim otherwise, it is patently Anti-American as it does nothing but present America in a bad light, even when America is doing good things. Would Al Jazeera take a true journalistic neutral stance, it could claim otherwise, but it has demonstrated time and time again that it does not and that it is Anti-American.
Al Jazeera was the mouthpiece of Osama bin Laden when he was alive, and they willingly broadcast videos of American journalists being executed. This terrorist network has no place in America, and it promotes values that are contradictory to what America stands for. It supports terror, and that is fundamentally anti-American and anti-freedom.