Based on the timing of that tweet, I think they're directly referencing an incident at a hotel.
tl;dr version of what happened from what I know is:
>black customer had some issue going on with a reservation
>starts berating the white employee, calling him a faggot, etc., at the front desk while filming him
>the employee has bipolar disorder or something
>ends up having a mental breakdown; hits his own computer
>black guy keeps on berating him even while he's clearly having a breakdown
>professional race baiter, Tariq Nasheed, spreads video on Twitter and it becomes a thing
>anti-whites try to pretend like this is just some normal white person trying to use "white tears"