Another thing to keep in mind is employers, especially private employers have the right to discipline or even fire someone/ask the individual concerned to resign for behavior off the clock if it brings discredit to or puts the employers/brand in a bad light.
Another recent instance of this happened with an individual who initially intended to taunt environmental protestors in Pennsylvania and then suddenly started racially taunting a video journalist documenting the protests because he was Black.
Taunts were all caught on video and after it was put online, the taunter’s employer released a statement stating his behavior was reprehensible and as a consequence, he showed himself to be unfit to remain employed with the firm. Mattered not that the taunter was off the clock at the time of the incident.