It seems to me that atheism is, if properly considered, treason.

In countries with the Queen as Head of State, she is held to be ‘Queen by the Grace of God’. In the USA, the Pledge of Allegiance involves expressing belief in ‘one nation united under God.’ It seems that by believing the God does not exist, a rejection of the notion of the Sovereign Divine Right of the Crown is negated, as well as the notion of a ‘nation united under God.’ Therefore, it seems that atheists are guilty, ipso facto, of treason, at least in the USA and Commonwealth countries.