My hope is folks quickly get through their impulses to respond to these sorts of very obvious trolls. Trolls seek instant gratification from having the power to stir up chaos and discontent. They get feed by the mere impression they can manipulate your emotions.
If you decide to engage, may I ask only doing so with neutral language? I think Cford’s showing on this thread is a great example, aside from ignoring. Putting the burden of explanation and justification back on the troll makes them work, and limits the gratification.