A mirror lets you see something from a different perspective.

In TEN separate posts, Q said:

Sometimes you can't TELL the public the truth.
YOU MUST SHOW THEM.

Also, when you look in a mirror, everything is flipped left to right.

A word is a 'palindrome' if it reads the same when flipped left to right, such as 'radar'.

A date can also be a palindrome.

The day that finally started 'showing the public' was the date of the inauguration -- January 20, 2021.

1-20-2021 is a palindrome.

Think MIRROR.