re: Why is wanting a wall between two countries racist?

Because it makes too much sense to assure that the United States remains a Sovereign Nation.

I mean, who the hell wants to have more protections against ISIS (or similar terror groups) entering the country through gaps of security, and proceed to commit acts of terror.

Surely you can see that this makes too much sense, therefore Liberals HAVE to shout racism because they have no other retort.