The Nazis interned some homosexuals in concentration camps immediately after the seizure of power in January 1933. Those interned came from all areas of German society, and often had only the cause of their imprisonment in common. Some homosexuals were interned under other categories by mistake, and the Nazis purposefully miscategorized some political prisoners as homosexuals. Prisoners marked by pink triangles to signify homosexuality were treated harshly in the camps. According to many survivor accounts, homosexuals were among the most abused groups in the camps.