In fact, when the Nazi's came to Jewish communities, they didn't force people into ghettos "at gunpoint" they often were rather nice for a while, then asked the Jewish community to move. After the Jewish community was relatively comfortable in their new ghetto, the Nazi's would come around "confiscating" valuables. Then they put the community on trains, robbed them, forced them to work, and killed them. Slow escalating evil is the way they did it, which is what makes it all the worse. 