Since 1968 there have been many athletes from many countries who have had their medals revoked due to doping or rules infractions. Pass no judgement as you name the teams/countries that have suffered such shame.
As always some of these countries/teams may no longer exist, and it would probably have been much longer had drug screening been more prominent earlier.
Revised 11/19/2017 - and one country really excelled in this (quadrupled its total!). I'm not putin you on. :)