Of course no group's policies are always "good for blacks", including policies from traditional "black leadership" sectors, like the "Rev's".
Liberals were invaluable allies in support of the abolition of slavery, for equal opportunity, and civil rights. If this does not make them "a Black's best friend"... I'm at a loss trying to think of any better.
Obviously, liberals as a political group have their own agenda, and traditional societal alliances -that historically also kept Blacks, Women, Indians, and other "interest groups" on the margins of society.
But, when
the issues of the day could no longer be avoided -(Lincoln in the Civil War, or Kennedy on Civil Rights, in the case of Blacks), liberals sided with the Constitution's "All men are created equal..." - over white male privilege... and put a new type of political iron in the fire, despite the fact that They were, and are, mostly white males.
So the Black---Liberal bond of friendship, is now a very strong metal... forged by fire and blood on battlefields from the Civil War on... to web forums.
And its gotten stronger with each layer of justice welded on, Women's rights, multiculturalism, Gay Rights, environmental justice, species rights, the "disabled", and so on. However, the real power of the White---Black liberal alliance won't be fully realized until its politically globalized.
As our national politics play out on the world stage, in real time, the cultural 'metal' from virtually every society on Earth is drawn to this civil rights sword.
Its like a magnet; and the blacksmith of time is constantly pounding global multicultural metals into the sword, filling-in the spectrum.
At some point, in the near future, the blacksmith will douse the sword in the fluid of NOW. The world will shift, and global issues will no longer be relegated to the 'back of the bus'.
Virtually every country on Earth supports Obama over Romney by wide margins. Even if Obama is not re-elected, nationally, liberals win internationally... maybe even more so... as dipping 'the sword' in a molten pool of international injustice is a powerful galvanizing force.
You're on point there. Racial politics will always be big in America, and White supremacy is global and inescapable. On the other hand, i cannot say that liberal policies are always good for Blacks, and I certainly won't say that liberals are a Black's best friend.