No. of Recommendations: 0
Fortunately, you don't have to. .... The government has to affirmatively prove their case; you don't have to prove the negative.
Hypothetical:
The Gestapo says "We waterboarded Valerie Timm until she confessed to being a Communist. We waterboarded her more, until she gave us names of more Communists, and she named YOU. Give us all your correspondence with her, so we can see if you are a Communist too". I say "I corresponded with Val 50 years ago. I tossed all her letters years ago". Gestapo "You destroyed evidence!"
That's the importance of the presumption of innocence.
How quaint.
Steve