What are some of the arguments against the Vietnam War?

People do NOT normally get upset about things (anything) when they are NOT involved. Once they are involved, they get upset. These people were upset: Doctors, lawyers, school teachers, fathers, uncles, sons, nephews, cousins, neighbors, home owners, newly weds, friends, STUDENTS, road workers, plumbers, baseball players, football players, hockey players, golfers, surfers, bowlers, etc. etc. were being DRAFTED into the US military to fight in Vietnam.