The Smothers Brothers Website has a page dated 2011 that says they are no longer touring. Lake Tahoe is just up the hill from me, and I sometimes thought of going to a performance. Never did.

Here's a 2007 performance of Who Do I Have To Hate To Be Your Friend? from a Las Vegas show.

Who Do I Have to Hate to Be Your Friend?
(Bret Martin)

Who do I have to hate to be your friend?
When are we gonna see us is them?
Unforgiveness is the prison we are living in.
Who do I have to hate to be your friend?

Hello Mother, alone, we regret to inform you
That someone you love is not coming home.
Charles and Maggie, Thomas and Stephen,
Body for body, we call it "getting even."
Ahmed, Mohammed, David and Abdul,
Along with Jameela, won't make it to school.
Boaz and Leah, Jonas and Chavez are carried away.
Tell me which ones to grieve and which ones to celebrate.

Who do I have to hate to be your friend?
When are we gonna see us is them?
Unforgiveness is the prison we are living in
Who do I have to hate to be your friend?

Rage, like poison, we swallow the pill,
Making us sicker each day,
When it's them we are trying to kill
We build a wall that's unbending with shame.
Lands and languages differ but our pain is the same.

Haasad is wailing and mourning Ameer,
Joseph's son Joseph is supposed to be here,
The blast – it happened so fast, Johnny could not get clear,
And the cry of his newborn son he'll never hear.

Who do I have to hate to be your friend?
When are we gonna see us is them?
Unforgiveness is the prison we are living in.
Who do I have to hate to be your friend?
Who do I have to hate to be your friend?

(These introspective words were written by Bret Martin, aka "The Cancer Crooner," from Santa Rosa; Tommy Smothers performed "Who Do I Have To Hate To Be Your Friend?" during a 2007 Live Vegas Stage Show at the Orleans Hotel, the video can be viewed HERE.)

Source: http://www.smiledsoul.com/who-do-i-have-to-hate-to-be-your-friend/

Not formatted for submission to the DT because I didn't verify these lyrics. I'd question some spellings, at the very least.