A bunch of nice niggas with aim like who blocking us?
BK where we stay, but you can still see the Pac in us
Oh, no disrespect to Diddy
Don't mean to be sadity
But I plan to conquer my city like yo, it's no Biggie
from Joey BADA$$ – Catharsis Lyrics on Rap Genius
Meaning
Joey’s giving shouts to rappers from both East and West coast that have paved the way of Hip Hop.

‘Niggas with aim’ (NWA)

‘Who blockin’ sounds like ‘Wu Block", get it?
Even though Pro Era stay in BK (Brooklyn), you can still see some Tupac/Westside in them. He also plays on the word ‘Biggie’ referring to Notorious B.I.G, saying he’ll take over his city effortlessly.
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