Remember, Vernon Howell, (AKA David Koresh) and his followers were deemed a "cult" by many. That word has been much abused over the years.
I've seen this repeated a number of times, but nobody has ever provided documentation. I've never been able come to up with even 100 victims of mob violence against the Mormons, substantially less than the number killed in one Mormon attack on Gentiles. If you have documentation otherwise, I'd sure like to see it.