Johnson's War on Poverty program was highly successful, only to be ended so we'd have more money for the Vietnam War, which led to Johnson's ignominious departure from politics. I would argue that Lincoln was the best president ever for African Americans with LBJ second. Regardless, LBJ was still a good ole Texas boy when it came to American hegemony and White Supremacy. So much has been said about lbj's shameful actions in Vietnam that we forget about his other dirty work. For example, check out his record in the Dominican Republic: https://jacobin.com/2015/04/dominican-republic-occupation-united-states-1965/