No Wall? How about a "Palisade"?

Instead, we could call the 'wall' a curb.

Or, Palisade...that sounds nice and friendly.

I noticed, that at least in June 2013, The Taliban Office in Doha, Qatar (image below and link from Stars and Stripes) appears to have both barriers protectionary concrete deterrents and a wall fence barricade barrier blockade nice palisade.

The Taliban office in Doha, Qatar, is seen on June 18, 2013.
Via Stars and Stripes; Image: OSAMA FAISAL/AP