Lyndon johnson's insistence on fighting the vietnam war and funding the great society without a tax increase to pay for them led to

It led to drastic inflation of prices in the 1970's
 
the increases in prices led to an increased level of public anxiety. there was widespread discontent in the USA. The problem was made worse by increased oil prices resulting from wars in the middle east. It also sedimented American uproar against the Vietnam war.

Democracy and darwinism would be my answer.