Sasha is told that enemies of the people are everywhere. Radio and the newspapers are full of reports of the saboteurs, wreckers and spies unmasked by the secret police. Sasha has to be vigilant and report any suspicious characters but he is not sure who is suspicious and who isn’t. Nobody looks like the wrecker on this poster that Sasha sees on every wall. The red letters striking the wrecker’s bold head are GPU, short for the secret police.