Was this a comparison to African-Americans as "dogs...?"
You mean NAACP actually stands for something?
I had a history teacher put it in perspective for me long ago. He said to the class "What would you do if the principal came in and said 'Starting tomorrow, we will all have to share our classes with dogs. They are no different from us, so treat them like you would anyone else'." We all though he was nuts, until he said "That's what it felt like when they desegregated the schools. That's what it felt like when they ended slavery. Sometimes people can believe something so strongly that, looking back, seems so foolish."
Not sure of the post's intent, but it reads that desegregation was bad; and woul appear to compare African-Americans as "dogs."
As far as slavery and the other posts - disease-pools were the major cause of Indian/Native American, the other was agression by settlers/conquerors. With regard to "labor" the Native Americans resisted or were deemed too weak because of the European diseases; indentured servants were "temp" labor-pools (serving out a "sentence" of debt); Africans were bought/sold by whites and blacks alike; however, the difference was the wide-spread and exploitation - to also include transport to a continent away - that the European slave-trade executed.
America's "infancy" benefited GREATLY from the free-servitude of Africans as Slaves; Lincoln did not want to free the slaves - he simply did what was politically astute at the time.
If you look at the horror of slavery AND then HONESTLY look at the 100years after and the progression - to include discrimination, past and present, Jim Crow, segregation, laws on the books against Blacks - I seriously doubt that any logically person would argue that harm was not done.
The NAACP was a necessary organization during the HEIGHT of the movement to provide and ensure EQUAL rights for Blacks; when the Federal and State Governments failed to take action or even recognize discrimination and wanton acts of aggression, as committed because of skin-color. Does the NAACP have a national platform and/or need in today's society - unsure, but I do see the 'behind-the-scenes' work that is being done on a micro-level (state scholarships, small-business support, etc).
Should George Washington's statute been covered - no; it is a part of history that should be told and re-told with integrity.
The fact that there are multiple opnions - that are spread between the poles, and some that are at the poles - suggests (strongly) that there is STILL need for more open and honest dialogue on RACE in America....!