By baiting Donald and making him do stupid social and political stuff, you damage Donald and foster extreme behavior, this was Donald's idea of an attack on Joe. This stuff will nibble away around the edges of his support among those who introspect, people's deep feelings are triggered and thinking or rethinking begins. That's why TV political ads that evoke strong emotion using music and other themes that trigger emotion and deep feelings often allow introspection to occur with a compassionate fame of mind or and angry one, depending on the narrative you wish to imprint.
Here Donald turns off those who have lost loved ones and others, there are and will be a lot of mourning people in America, each loss affects many.
They will be attracted to and empathise with the letter writer, and dislike Donald and the right for the pain they have inflicted. You must keep Donald tweeting right up until election day, no matter how painful, he must not be allowed to go silent, he would rise in the polls then like a zombie out of the grave.
Tech Writer Calls For Twitter To Remove Trump Tweets | Morning Joe | MSNBC