How did American public react to the Korean War?
The US was still recovering from WW2 when Korea erupted. This is part of the reason Korea is known as the "forgotten war", it has been overshadowed by WW2. There was less than 5 years of (peace) time between the Korean War and WW2.
How did General Douglas MacArthur react to the events in Korea What was his stance on the Korean War?
General Douglas MacArthur commanded all the American forces in the Korean War. He led a brilliant amphibious attack behind enemy lines at Inchon, nearly allowing the United States to win the war. The Chinese intervention caused the American forces to retreat, MacArthur demanded retaliation against China by possibly using nuclear weapons. President Truman denied his request, and after public disputes between the two, President Truman relieved MacArthur of his command on grounds of insubordination.