Title referes to a line in "The Wall" lyrics by Pink Floyd.

Barrier? separation fence? security fence? anti-terrorist fence? racial segregation wall? Apartheid Wall?

From Wikipedia:
The International Court of Justice, in its advisory opinion on the barrier, wrote it had chosen to use the term "wall"

The BBC's style guide for journalists states "The BBC uses the terms barrier, separation barrier or West Bank barrier as acceptable generic descriptions to avoid the political connotations of "security fence" (preferred by the Israeli government) or "apartheid wall" (preferred by the Palestinians)."[19]