
Wall, noun
1. a continuous vertical brick or stone structure that encloses or divides an area of land.
2. enclose (an area) within walls, especially to protect it or lend it some privacy.
"housing areas that are walled off from the indigenous population"If you don't want a wall on the border, you can;
A. Break your house walls. You don't need walls with that cheerful, inviting spirit.
B. Break your car doors and strip off anything that prevents people from getting in. You also don't need a key, or lock, etc.
C. Make sure you have no fence in your yard. In fact, take that loving mini-fence around your garden that prevents animals from getting in. You don't need it.
D. Help by taking down neighboring walls and fences in the neighborhood to help exploit them to the elements.