Huey Newton going stupid
You can't resist his HiiiPower

from Kendrick Lamar – HiiiPower Lyrics on Rap Genius

Meaning

Huey Newton was a co-founder of the Black Panther Party, an African-American revolutionary leftist organization. The Black Panthers fought against racism and were noted for their militant stance, politics, cultural expression and determinedness. They had a great impact on America and by extension, other countries. More than just simply fighting against racism, the BPP and NBPP are representatives of the Pro-Black movement.

“Going stupid” is another way of saying you’re “goin in” or doing something with a lot of energy.
Also, in In Seize the Time (Bobby Seale) the author Bobby Seale mentions over and over again how agitating it is for people not to educate themselves, but to live by the hype, to be racist against people who are not racist towards you, and how the system can only be changed from within, with the people who want to change it (even if this means these people being different from you)… Huey Newton goes stupid due to stupidity and closed mindedness—Eldridge Cleaver, Huey P., and Bobby Seale fought hard against the racist system, losing everything they fought for so others can be stupid and only half-educated about topics.

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