Looking at the whole thing, it seems that the pro-TRA woman's sin is to have attempted to defuse the Get the L Out protest as quietly and with as little fuss or further disruption to the parade as possible.
She was being castigated for saying "Okay, we've let you have your protest, can you stop obstructing now?" instead of inciting the crowd to do a full-on public five minutes hate or er... screaming abuse for an hour, or or or.
This was not acceptable to the interrogator. And she must therefore now accept her humiliation.