Firstly, I feel that many of those people who persecuted Dorje Shugden pracititioners are are not really Buddhists. If they are real Buddhists, they would have been kind to all "sentient being", and not "sentient being except Dorje Shugden practitioners". Many of them are being "brainwashed" since young by the CTA that Dorje Shugden is the reason why the Tibetans cannot get back their country. This is a very dangerous move, because on one hand it get people "excited" or "motivated" for a cause; but on the other, it planted the seed of hatred in their people, and they are just looking for something external to blame.
This, to me is very amusing. Anyone with pretty basic Buddhism teaching will know that we need to look within for a solution, not blaming others. CTA is formed under the leadership of HH Dalai Lama, and I would assume that CTA knows Buddhism, and yet, planting hatred in their people, and blame Dorje Shugden for their own failure, I think there is something wrong fundamentally.
CTA needs to stop encouraging the hatred in their own people before it back fire...