Filling out paperwork for a security clearance long ago had two questions about "have you ever been a member of a group dedicated to the overthrow of the us gov

Filling out paperwork for a security clearance long ago had two questions about "have you ever been a member of a group dedicated to the overthrow of the us government, if yes explain". The next question was about being an officer in such a group. I always enjoyed that question in that there was a two line explanation field :) I assume that was similar in that it's there to catch a lie (possibly just after the fact / legal leverage) ... not really find anything out with that question at that moment.