The Black Panther Party for Self-Defense began to organize largely around protecting people from police brutality. Today they might have focused more on fighting the prison industrial complex. While much of the white nation will deny the national contradiction and try to call for 'color-blind' policies to solve the problem, the oppressed are always more willing to recognize it. While the PMP has carried out successful campaigns to educate about prison issues, they lack the overall revolutionary strategy that will bring an end to national oppression. Fighting prisons is an important struggle right now, but its power is only fully realized when put in context of the internationalist revolutionary movement and the struggle against imperialism in general.
Prisons are just one manifestation of imperialism today.
The PMP was partially founded by the Democratic Socialists of America, which is not a revolutionary group, but only works for reforms within the imperialist system.