LEVI'S® STADIUM PROMOTES AN ENVIRONMENT WHERE GUESTS CAN ENJOY THEIR GAMEDAY EXPERIENCE FREE FROM ANY OF THE FOLLOWING:
* Offensive language or obscene gestures, to include the use of such language or gestures concerning a person's race, ethnicity, color, gender, religion, creed, disability, age, sexual orientation, gender identity/expression or national origin.
* Fighting, taunting, or threatening remarks and/or gestures that incite or encourage a confrontation or physical assault.
* Intoxication or signs of impairment related to alcohol or drugs.
* Irresponsible drinking or behavior.
* Inappropriate displays of affection.
* Smoking (in non-designated smoking areas).
* Gang activity; including but not limited to wearing or displaying gang clothing and/or indicia.
* Offensive clothing.
* Any distraction to the progress of the game or event.
* Throwing objects of any kind.
* Occupying any seat without the appropriate ticket.
* Mistreatment of visiting team fans or guests, including verbal abuse, harassment, profanity, confrontations, intimidation, or threatening behavior.
* Failure to follow the directions of law enforcement, security, ushers, ticket takers or any other Levi's® Stadium personnel.
* Violations of any Levi's® Stadium Policies, local City of Santa Clara ordinances, state, or federal laws.
* Other actions that cause a disruption and/or hinder the enjoyment of the event.
* Any behavior that impairs the safety and/or enjoyment of the event from other guests.
* Committing any of the above-listed violations may result in ejection from the stadium, prohibition from attending future events, and/or arrest. This includes revocation of parking privileges.
The policy is a little vague, but they were within their rights to not let them come in with what security deemed to be "offensive clothing." Just like if someone had been wearing a KKK or Black Panthers hat.
And they could have just taken off the hat and gone on in. The fact that they threw a 45 minute hissy fit about it sure makes it seem like they had an ulterior motive in the first place.
But we really don't even know if this was the issue, all the video shows is them yelling at the security guard while he stands there patiently.