Some of the motorcycle gangs involved in Sunday’s shootout in Waco, Texas, are dangerous criminal organizations, the USA Today reports. 
Among those involved were the Bandidos and Cossacks, both of whom are known as outlaw biker gangs and “pose a serious national domestic threat.”
They’re among what the FBI dubs outlaw motorcycle gangs.
The Bandidos, according to the FBI, “are involved in transporting and distributing cocaine and marijuana and are involved in the production, transportation and distribution of methamphetamine.”
The FBI lists at least 60 gangs who “have been either enlisted or have attempted to gain employment in the military or various government agencies.”
The Cossacks, a smaller motorcycle gang, have been feuding with the Bandidos.
“We knew the tensions with the Cossacks were as high as they’d ever been,” Steve Cook, executive director of the Midwest Outlaw Motorcycle Gang Investigators Association, said. “I don’t think anybody could have forecasted it to the degree that it happened.”