He was still thinking about the best way to fight racism. Who knows what the organization would've become if he had lived?

Yes, the Black Panthers worked with everyone, including the Young Americans whose symbol was a Confederate flag. That's because Seale and Hampton put class first.

https://medium.com/a-universalist-in-an-identitarian-age/the-black-panthers-put-class-first-and-race-second-13f4eb56ae18