RT sure has a lot of Communist iconography up at their site.
Please detail this accusation about the Rutherford Institute? Maybe the fact that they use the color red on their website makes them thus suspect? (We’d better revise the US flag to be merely white and blue.)
I Googled for “Rutherford Institute” “Communist.” They complain about Communists from time to time. Nobody’s flagrantly accusing them, except apparently you.
Sotomayer may have come to the right answer by the wrong method. But brute contrarian reasoning is no reasoning at all.