[tomnipotent]

> You appear to have copy-pasted

Wikipedia pretty much defines it the same way: "McCarthyism is the practice of making accusations of subversion or treason without proper regard for evidence."

> specifically treasonous

Treason is one small dimension, use as a rhetorical device to make the real villain stand out - accusations without evidence.

[peteretep]

No, Wikipedia defines it as accusations of treason or subversion, as you’ve specifically quoted.