The frontman opens up about why Slipknot "infuriate" people
Incident occurred at show last month (July)
The frontman previously got a fan removed at a show in Toronto last month (July)
Singer "ignored the symptoms" after injury
Metal frontman speaks out following increased violence in the US
Incident has received a mixed response online
Frontman recently underwent spinal surgery after breaking his neck
Metal band perform at Bridgestone Arena in Nashville
Two acts toured together in 2001
Drummer has explained how health problems stopped him from being in the band