I think you're wrong about a great many things, but I don't think you mean harm to the country or are genuinely dangerous.
So, please intelligently, and rationally (both vital), and with due consideration of our actual laws, and widely held standards, please present the case for them meaning harm to this country and being dangerous.
The more people seem to use it as a coded signal for anything they don't like, the less they are able to say what it means, and the less they can even articulate their general feelings of frustrated unhappiness.