If we're going to be talking about “cult,” the most dangerous cult is the Roman Catholic Church. If you want to know why, look at the movie "Spotlight" (true story) about how bishops, cardinals and other "gurus" of the Catholic church sexually molested thousands of boys and girls. These horrendous acts have been and covered up from the top Roman Catholic guru (the Pope) all the way down to the parish priest. 

In my view, the real reason why some people in and out of the media carry out witch-hunts against smaller non-Christian religious organizations is to take the spotlight off those powerful religious organizations like the Catholic Church.