They seem to have a high desire to place any disrespect they can on what seems to be an otherwise revered political activist in recent times; and it's only further fueling the discussion, and in all likelihood - probability for successors.
They would have been smart to play a leveling field, to treat Luigi's act with an element of absurdity, which would cause everyday people to question if their relatability towards Luigi was warranted or even made sense. Instead, they played a hand that the fearful would - because they are, and only validated the vigilante's narrative - because it is.