Anaconda plan was the plan the union made too overcome the confederacy
At early stages, yes, very soon they lost all popularity, even among the conservatives. That is because at first the idea behind it was that it was honorable and good because it stopped communism. Very soon everyone realized what kind of a hell the war was and that it was pointless and that there would be no problems with them even if they did turn into a Communist state. The negative effect it had on people was unspeakable.
The Soviet press and government were not stunned nor disgusted upon the discovery of the Concentration camps. Soviet soldiers were probably so familiar with the horrors of the Nazi system by then that they didn't think them particularly appalling. Equally depressing things had already happened within the Soviet Union in the war on the eastern front.
In general, no, the convoy system was not a successful strategy because the Germans generally were not afraid to sink the convoys either. But there were instances in which the convoys would engage with a Germany boat and win.
Other republican groups fought to overthrow aristocratic governments. this lead to the french revolution is a main example
