If anything, journalists hate the constitution, they take advantage of the first amendment to sow discord and chaos in society. There was a reason why John Adams suspended free press despite championing it when he became president, too many journalists at that time wanted to undo the newly born country of America. Yes even in the 1700s these "truth speakers" wanted to erode society.
And a person can have an opinion denying facts. The opposite of an opinion is a fact. Since the holocaust is a fact, and not believing it is therefore an opinion.
