For the shards of a shattered mirror to reflect the same thing is an impossibility.
All shards reflect parts of reality from their own little angles and places. Surely.
But for them to show the exact same thing, they would need to fill the same position in space and time, and even then, every reflection would be just that: A crude throwback of what has been cast onto them, distorted by the imperfections and quirks of their own little surfaces.

Such is humanity.
We all look at the same reality from the perspective of our own life, filter it through our own little ego, and produce a bent and banged up conclusion about what truth is and what life is about.
No two slivers cast the same picture. No two living beings will ever produce the same truth.
For all but those that know all and everything; reality will always be subjective.