Real Dharma teachers or practitioners don't have to associate themselves with anyone to spread Dharma or to benefit people. Robert Thurman knows very well he doesn't really have the quality to attract students or followers. Therefore, he has to be close to the Dalai Lama. The public has the perception that if you are close to the Dalai Lama, you must be a qualified Buddhist master. That is how he becomes qualified as a teacher/expert.
To make his organisation more credible and prestigious, he also associates the Tibet House US and his own business Menla Spa with the Dalai Lama. He will do whatever it takes to make himself wealthier, even if it means openly attacking Dorje Shugden followers. He didn't realise what he is doing is very un-Buddhist and he is ruining his own reputation.
It is really ironic, he wrote a book called Love Your Enemies, it talks about how to replace anger with patience, and the practice of exchanging self-preoccupation for compassion but yet he was so un-compassionate towards Dorje Shugden followers, and there was so much anger in him. Is he not a hypocrite? He is such a goody goody man in front of the public but actually, he is full of anger. Please think twice about going to his meditation program, you might become angrier than finding peace in you.