The CCF had actively purged suspected Communists from its ranks since its founding .
Luckock 's involvement with the HCA brought her under suspicion and resulting in demands that she choose between leaving the HCA or being expelled from the CCF .
The CCF had actively purged suspected Communists from its ranks since its founding and Luckock 's involvement with the HCA brought her under suspicion and resulting in demands that she choose between leaving the HCA or being expelled from the CCF .