But even a small lighter can burn a bridge
Even a small lighter can burn a bridge

from Kendrick Lamar – Bitch, Don't Kill My Vibe Lyrics on Rap Genius

It doesn’t take much to ruin a relationship; even something small and petty can destroy a bond between people.

Maybe Kendrick means the bridge between ganglife and being succesful (as a rapper) or getting out of the hood can be destroyed easily.

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