Plural refers to both the “one blood” and “Euros”.
One Blood just means Bloods are united as one even though they have many members (i.e. they are plural). Sort of like when the army replaced “Be All You Can Be” with the “Army of One” slogan. It was quickly abandoned when the paradox between individual choice and group coherence became apparent. Too bad they hadn’t read up much on social choice theory.
Big up to Kenneth Arrow.
“One blood” is also a reference to “One love,” a phrase which expresses unity. In this case that unity would be among blood gang members, but there is even deeper meaning here. Nas has a song called “One Love”, and in the song “The Kill”, Game states the following:
“Nas, we forever since you helped me get a deal son”
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