I believe LBJ ranks among the most evil Presidents in the history of America. I believe 50,000 American deaths in Viet Nam, are the direct result of LBJ sinful actions. Early on, within the first six months, the LBJ White House knew they could not win the war (as presented in the book, The Fog of War) yet continued to "fight" a war of attrition. They lacked the courage to destroy the Soviet and Chinese supply transports (trucks, trains and ships) fearing a nuclear exchange, and you do not win a war unless you destroy the enemy's ability to wage war.
So while I was serving in the war effort, from the safety of Germany, Americans were being conscripted and transported to die in Viet Nam to protect the political power of LBJ. While I was away, my 1957 Chevy was destroyed, and so, stretching a bit, I hold LBJ responsible.