So she hit the back seat
Rosa Parks never a factor when she making ends meet
from Kendrick Lamar – Keisha's Song (Her Pain) Lyrics on Rap Genius
Meaning
Now if you DIDN’T know,

Rosa Parks was a civil rights activist who’s famous for refusing to give up her seat in the front of a bus, to go to the back of the bus where African-Americans were allowed. Now, Ms. Parks isn’t on the girl’s mind cause she’s just trying to make a living..
Rosa STOOD UP for her rights by refusing to literally STAND UP, but Keisha’s staying seated in that backseat is letting herself get her rights as a human being infringed on by maintaining this lifestyle.
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