‘Big Brother’ — Race War Explodes … Aaryn Mocks Black Houseguests

The race war inside the “Big Brother” house came to a head last night … when racist Aaryn picked a fight with a black female contestant … and MOCKED her by saying, “Whatchu gon do, gurl”

She continued in an over-the-top stereotypical black voice … saying, “Whatchu gon do gurrl … class girl Where”s yo class” (drama begins at the 2:00 mark)

It was disgusting and vile — a callback to a white slavemaster talking to slave on a plantation.

Eventually, Candice — who”s African American — stood up for herself … only for another female contestant, GinaMarie, to get in her face … saying, “You want the black to come out”

As things got even more intense, Howard — who”s also black — grabbed Candice and begged her to stand down and not fight with the other racist houseguests.

FYI — the fight started over a “prank” Aaryn pulled on Candice — by flipping over her mattress.

Candice broke down in tears after the confrontation. Aaryn probably scouted for wood to burn a cross.