Video: Fan in gorilla suit and ‘All Lives Matter’ shirt gets on field during Detroit Lions - Chicago Bears game in Chicago
Sunday's Lions-Bears game in Chicago was briefly interrupted in the fourth quarter as a fan wearing a gorilla suit and a T-shirt that said "All Lives Matter" on the front and "Drop the Guns" on the back, got loose on the field.
The fan got up the field once, turned at the 10-yard line then started in the other direction, slipping at the 40-yard line before being piled on by security guards.
According to the Associated Press, there were no protests of the national anthem before the game - a movement started by 49ers Colin Kaepernick that has stirred a variety of both positive and negative reactions from football fans and non-fans alike.
Rettke faces up to four years in prison after being charged with one felony count of civil rights intimidation, according to the AP. The student has since said he was trying to provoke the protesters and said he regrets his actions.