Three-time world champion Jackie Stewart says the opposition to Halo is no different to the criticism he received for trying to "kill" Formula One by pushing for safety in the 1960s.
Stewart is credited for helping F1 reach its current level of safety through a one-man crusade he started during his years as a driver in one of the sport's most dangerous eras. Though seen as a pioneer today, at the time Stewart was attacked by media, fans and even some of his fellow drivers for what they perceived to be ruining the fundamentals of the sport.
The decision to implement Halo for the 2018 season has been hugely controversial, with Mercedes chief Niki Lauda claiming the cockpit protection "destroys the DNA" of a sport which has always featured open cockpits.