Treason against the United States, shall consist only in levying war against them, or in adhering to their enemies, giving them aid and comfort. No person shall be convicted of treason unless on the testimony of two witnesses to the same overt act, or on confession in open court. US Const. A3 S3.

If corporations have rights under the US Constitution, they can be subject to the penalties under the US Constitution. If FB, Google, Twitter, etc. as a corporate person are guilty of treason, time to put the corporations themselves to death (e.g. dissolution). Problem solved.