Okay, upon closer watch of the sprint, I retract my comments a bit. Démare does make some strange moves with his head, but as I see it, he probably does not really headbutt anybody, and Boasson Hagen doesn't even seem to notice him. There isn't much space for him to go beside Haller and Hagen on the right-hand side, but it is probably not as dangerous as I initially saw it (and I didn't really complain about Sagan squeezing between the barriers and Nizzolo at the Worlds last year). And dubious movements notwithstanding, it was a good sprint from him but Kittel is on another level.