220px-buffalo_springfield_-_buffalo_springfield#10 – Buffalo Springfield – “For What It’s Worth” – (1966)

Released at the tail end of 1966, Buffalo Springfield (which included Stephen Stills and Neil young) had a slightly more subtle take on the protest song. It was even written about the war, but about riots in L.A. (which were counterculture clashes with police and if the counterculture was partly a result of Vietnam, then I guess it was, in a roundabout way, about the war). It was a top 10 hit and the only major hit the band had.