Hm
Remember, this isn't about a real expression of outrage. This is creating the climate to put pressure on people using dirty tactics. You want to turn up the heat on these guys and to do that you have to sound genuinely outraged, but not like a pissed off partisan.
The trick in bringing this kind of tactic to light is to sound as calm, rational and reasonable as possible. The best candidate for this is the young mother in a swing district. Vets are also good for this, as are teenagers. But anyone can do it if they mind their tone and contact the right people. This will happen again and again, especially as the Sauron/Gollum campaign spirals to defeat, so save this post and practice it when needed.