AGRA: A case was registered against three men for allegedly hitting a Dalit groom with the butt of a pistol and threatening to kill him if he did not dismount his horse and walk to the wedding venue.Vishal Nigam’s wedding procession was passing through Azizpur area when the accused’s vehicle honked for passage. Enraged at being stuck, the accused stepped out of their vehicle, brandishing a gun and hurling abuses.