Lyndon B. Johnson became the 36th President of the United Staes of America after the death of President John F. Kennedy. Among the public policies he supported, he dedicated numerous resources to the war on poverty and was an advocate for the civil rights movements.
However, he faced opposition from many Democrats who stood against the ongoing war in Vietnam. President Johnson dramatically increased the number of personnel in Vietnam from 16,000 units in 1963 to 525,000 in 1967. This is why many Democrats nowadays prefer to not be associated with President Lyndon B. Johnson.