http://mikeely.wordpress.com/2009/07/13/on-socialist-methods-and-the-stalin-era-\
purges/

Basically saying we as communists have to be open about our history, because
otherwise the ruling-class gets the final say on the purges. This is part of the
reason it'd be good to do a study on democratic centralism, and it reminds me of
the UCPN(M)'s willingness to discuss why the socialist states of the 20th
century succumbed to peaceful counter-revolution.