Ronald Reagan Spoke Truth to Power

Some people object to that.

Addendum: If you want an example of “No true Scotsman,” you can take a look at comment #70 on the thread:

shall we segue into the facts that none of what Stalin or Mao practiced was actually communism per se and that those painted with the red brush by snitches like Reagan were frequently not any kind of communist at all?

You can also think of non-Communists who refused to testify as decoy Communists. By acting like Communists they drew fire away from the active agents.