Compartmentalizing a murder

Today, I share a thought from someone whom I shall not name but it is someone I highly respect. The truth in the short statement is rather profound. Here it is:

“Somewhere someone lives with the memory of murdering Stacey. I wonder who that person is and how  it is possible to just compartmentalize it.”

How does one subjugate to the unconscious such a vicious attack? How does one live with himself/herself and look in the mirror every day?

I’ll let you know who shared the above thought if I get permission.

Duke