Nigger-proof Glass Edit Meaning

1.

'Nigger-proof glass' is the security or bullet-proof glass enclosure that surrounds and protects clerks at open-all-night convenience stores and check cashing stores in high-crime neighborhoods.

"During my first two years of college, I worked graveyard shift at a convenience store in Del Paso Heights. The neighborhood was dangerous- with crack hos and sullen thugs our main clientele- but I felt reasonably safe behind the nigger-proof glass."

See security, bulletproof