Lyndon B. Johnson's political career reshaped American society through his ambitious Great Society programs. His administration championed civil rights, education, and healthcare reforms, aiming to reduce poverty and promote social justice. The passage of key legislation, such as the Civil Rights Act and Medicare, marked significant strides toward equality and access to care. Johnson's focus on government intervention to address societal issues established a legacy of activism and reform. His tenure, however, was also marked by controversy, particularly regarding the Vietnam War, which shaped public perception of government and policy.