So triggered. Edit: Judging by your posts I see you’re just a trump hater with no objectivity. Explains it.
“A thing regarded as a protective or restrictive barrier.”
“Any high vertical surface, especially one that is imposing in scale.”
“an upright structure of wood, stone, brick, etc., serving to enclose, divide, support, or protect”
“An upright structure of masonry, wood, plaster, or other building material serving to enclose, divide, or protect an area”