Same reason why untold legions of white folks have resisted in the same manner when feeling their rights have been violated. Hill probably became indignant due to the cops sudden attempt to snatched him up despite his window already being cracked.
Then crack the window and not respond to get out of the car
Simply say yes sir.. Get out and say I am Tyreek Hill and I am sorry for speeding but I play for the Dolphins and I'm late.... So please go ahead and give me my ticket and I'll be more careful