This well-intended article makes several mistakes:
FIRST, TRUMP-THE-FRAUD IS NOT YET THE REPUBLICAN NOMINEE, AND MIGHT STILL BE STOPPED VIA SEVERAL STRATEGIES NOW UNDER CONSIDERATION. Therefore, he ought not to be addressed as the Republican nominee when that is not the case, at present.
SECOND, signing off with YOURS IN THE STRUGGLE is most unfortunate, as TRUMP-THE-FRAUD is in no way part of the same struggle for social justice in America as is the article author. Why dignify this arch-enemy of truth, justice, and progressive values in any way?
FINALLY, an Open Letter to TRUMP-THE-FRAUD treats him as a rational person, which is not appropriate to this narcissistic megalomaniac who would be an unmitigated disaster for America and the world,