Your question is not altogether clear. If you are talking about
the Allied countries that participated, there was nothing to
suppress because almost everyone wanted to fight and win it. In the
Axis countries like Germany, Austria, Japan and Italy people
started out enthousiastic (so nothing to suppress there, too) and
later became more resigned but there never was an active anti-war
feeling until almost the very end.
In the occupied countries there were resistance movements that
were pursued - not by local governments, but by the Germans -
although in most countries, the resistance movements got most of
their members at the end of the war when it was clear that Germany
was on the verge of collapse.