Tatkreis ("Action Circle") was a Völkisch movement which existed during the era of the Weimar Republic.
They followed the beliefs of most Völkisch movements but claimed the current republic "corrupt and sterile beyond repair" and called for "freedom and rebirth" in Germany.
Tatkreis called for an end to capitalism and promoted a neomercantilist ideology, a system which encourages exports and discourages imports, with a high level of state manipulation of the economy introducing high tariffs, and called for German self-sufficiency.
This idea was easily received by the citizens of Germany, who lived in a time of depression after World War I.
Even before this, the way the NSDAP undermined Tatkreis was by drawing from their membership, as both parties targeted the same types of followers.