Things that helped turn public opinion against US involvement in Vietnam were
the killing of civilians by US troops at My Lai
the televising of war footage on national news outlets
Explanation:
The war effort of Vietnam was openly televised and covered in great detail by the press and this was for the first time in the history of the country that a war was receiving such a press.
More and more people became disillusioned with the war as they could not identify an immediate cause of why Americans were involved in such a foreign conflict.
This made the people defy the government, the army itself and the whole war effort as something unnecessary and avoidable.
