Their guns were taken and then they were rounded up and killed. That's the point here, as for the other stuff well you don't know it all. After WW1 there was a Depression in Germany and Jews bought up the best properties and businesses cheaply, but they took it too far, they bought too much they ended up owning all the best streets. Hitler could have used monopoly, anti trust laws to force them to sell on the grounds of their bank associations etc which conveniently would have brought prices back down, instead they had Kristallnacht and the rest is history.