A delegate with the far-right Alternative for Germany (AfD) bit a protester during a scuffle on Saturday outside the AfD’s party congress in the western city of Essen. Stefan Hrdy, 67, contended in an interview with dpa on Sunday that he bit the person in self-defence amid an “escalating situation” with anti-AfD demonstrators trying to blockade the Grughalle arena where the congress is being held. A spokeswoman for the Essen police explained that they learned about the biting incident from media reporting but could not immediately say whether the person bit by Hrdy had filed a complaint. A pol…