Simply follow the accusation with that easy step, and – Voilà! You have photo-bombed the accuser, and can walk away, safe in the fact that you are armored against further threats.
BTW, that à? It turns out, that on a Mac keyboard, you just hold the letter you want to accent, and a little pop-up will show you the alternatives, Just click on the one you want with the mouse/trackpad/touchscreen.
I can’t tell you how long I’ve needed to know that.