Und ich dachte Headbutts sind in der UFC illegal

Jones, meanwhile, allegedly resisted arrest when he was being taken into custody and headbutted a police car.

"As Jones was being detained, he became irate and smashed his head into the front hood of the [Las Vegas Metropolitan Police Department] patrol vehicle leaving a medium size dent as well as chipping of some of the paint on the vehicle," the report stated.

This led to the felony charge due to the damage against the vehicle.
Grund der Festnahme war häusliche Gewalt gegen seine Verlobte.

https://bleacherreport.com/articles/...-during-arrest