Treason is acting to overthrow the government by force. Mere advocacy (talk) cannot be treason. See, 1st Amendment. But you better not "adhere to enemies" while at it. Tokyo Rose forgot that bit.
The crime of treason has had some broader definitions, back in the day. At one time in England copulating with the king's wife or the wife of the king's eldest son was treason. Protecting the old blood-line, doncha know.
There was also "petty treason" - violent acts against ones superiors other than the king. A wife who murdered her husband, or a serf who murdered his lord was guilty of petty treason.
"Fully half the quotations found on the internet are either mis-attributed, or outright fabrications." - Abraham Lincoln