It is sad and sickening to see people practice extremism, no matter what religion. Yet, this instance of Buddhists adopting a hard-line attitude towards other religions is most unacceptable. It goes against the grain of Buddhism. Buddha taught kindness and compassion and non-violence, as cornerstones of Buddhism. Buddhism is supposed to be the least dogmatic of all religions.
Reflecting on this, we are once more reminded of how anti-Shugdenists, the CTA, and those in the Dalai Lama camp, have treated Shugden practitioners with violence too. They are 'extremists' who just label Dorje Shugden as a spirit, without justification, and torment and abuse Shugden practitioners who, because of devotion to their Guru, have continued their practice of Shugden, despite the ban.