Wny were first concentration camps opened?

Explanation:

March 1933

From 1933 to 1945, Nazi Germany operated more than a thousand concentration camps on its own territory and in parts of German-occupied Europe. The first camps were established in March 1933 immediately after Adolf Hitler became Chancellor of Germany.

answer: a video that encourages an armed attack on the government.

explanation: it is a violent overthrow to the government.

hope this : )